Ning has many features. Which features do you use most, and in what way are you using them? Specific examples will be helpful. Which features do you rarely use, and why? Please sound off in the comments or on Twitter. Once I have a better understanding how people are using Ning, I can come up with some alternatives that make sense.

A warning about hosted services

We all use hosted services: Blogger, EduBlogs, Ning, Google Apps, etc. What happens, though, when the service either shuts down or switches to a fee-based model? In the case of Ning, many users will be left stranded – losing large amounts of information, files, articles, etc. It’s a risk we take in exchange for free hosted applications like Ning.

While there are other services that replicate some (or most) of the functionality provided by Ning, it may not be the best option to simply switch to another free hosted service. If at all possible, it would be better to find an open source alternative that can be installed on your school (or district) servers. I realize this might not be possible for everyone, depending on your IT department, but if you help IT (and the administrators) understand why it’s important to host the software on your own servers you may convince them.

A short list of possible alternatives

While it will be best to get some responses about how you’re using Ning before making recommendations, I thought I’d throw out a couple now, for those who can’t wait. These may or may not meet your needs. Your mileage may vary.

• BuddyPress – BuddyPress is a free and open source social networking platform built upon the powerful WordPress platform (the same platform that powers EduBlogs). It looks to have all the features that made Ning great. They’ve also built a Ning to BuddyPress User Importer, and have a blog dedicated to help Ning users make the switch.
• elgg – elgg is a free open source social networking platform similar to Ning. You can download and install it on your own server for free, or have them host it for a small fee.
• Mahara – Mahara calls itself an open source e-portfolio system, but it has blogging and social networking systems built-in. Have a look and see if it fits your needs. Hosting does not appear to be available, so you’ll need to install it on your own server.

That’s all for now. Be sure to sound off in the comments or on Twitter with examples of how you’re using Ning, and if you’ve heard of other potential alternatives.

Update

A Google Doc has been started listing both hosted and non-hosted alternatives to Ning. You can find it here.

What is Phishing?

Mozilla defines phishing as follows:

Phishing is a form of identity theft that occurs when a malicious Web site impersonates a legitimate one in order to trick you into giving up sensitive information such as passwords, account details, social security number, or credit card numbers. Phishing attacks usually come from email messages that attempt to lure the recipient into updating their personal information on fake, but very real looking, Web sites. Phishing scams most often appear to come from companies such as banks, credit card companies, online payment services such as PayPal, or other popular sites such as eBay, Facebook, or MySpace.

Here’s an example of a phishing scam email:

Example of a fake PayPal email

Anatomy of a Phishing Email

According to NoPhishing.org, here are the typical steps involved in launching a
phishing attack via email:

• An email arrives in your inbox.
• The email pretends to be from a legitimate organization, business or government agency.
• The email will have a persuasive message designed to entice the recipient to respond.
• The email will convey a sense of urgency.
• The email will have a reassurance of security.
• The email will have a link to a website, pop‐up or web‐based form.
• Clicking on the link will lead to a bogus website where the Phishers are waiting to steal your information. You may be prompted to provide private information such as login credentials and/or account information, PIN, credit card information, etc. If you share this information, you are now officially a victim.

What to Look For in a Potentially Bogus Email

Although Phishers have become quite sophisticated, there are still some telltale
signs common in most Phishing emails:

• The email contains one or more spelling mistakes.
• The email address in the From: line isn’t a real address.
• The link to “verify” your account doesn’t point to the real website. (For example, in the PayPal email above, instead of going to www.paypal.com, it goes to an IP address. Sometimes the scammers will register a similar address, such as www.d.paypal.com, or www.paypal.com.fraud.com, etc., to make it appear legitimate.
• Many phishing emails will warn the user not to fall for phishing scams. (Ironic, isn’t it?)
• Many phishing emails will contain a few real links, such as links to the real company’s actual privacy policy, etc.
• Most phishing emails won’t use your actual name. They’ll refer to you as “valued customer” or something similar…or not include a greeting at all.
• Most phishing emails will try to instill a sense of urgency. For example, tell you that you must log in or something bad will happen…perhaps your account has been compromised, or will be deleted, etc.

Phishing Websites

If a phishing email is successful in getting you to click a link, you’ll be taken to a bogus website made to look as much like the real website as possible. It’s here where they’ll ask you to log in and/or enter information to “verify” your identity. Once you enter that information, their scam is complete. They now have (at least) your login information, and possibly much more such as your social security number, ATM PIN number, etc.

A fake/spoofed PayPal website

The example above is made to look just like the real PayPal website. If you enter your account information, the scammers will now be able to log in to your PayPal account, where they can transfer funds, get banking information, etc.

What if you suspect a bogus website?

Most modern browsers such as Firefox, Safari, Google Chrome, and even the latest version of Internet Explorer have built‐in Phishing Protection, but sometimes very new fake sites will slip through the cracks. If you think you may have stumbled upon a fake site, try logging in with a FAKE PASSWORD. If the site appears to “log” you in after you’ve entered a fake password, then you KNOW it’s fake.

Firefox's Phishing Protection in action

You can test this yourself by pointing your browser at the following address: http://www.mozilla.com/firefox/its‐a‐trap.html

If you’re brave, you can try out the Phishing protection on some real websites. You can find a list of recently submitted phishing sites here: http://www.phishtank.com/

Additional help and information

Lifehacker.com has an excellent article with additional tips to help keep you safe, including such gems as “Ignore Web Site Popups Saying You Have a Virus”.

If you’re still unclear about Phishing, you can watch the short video here: http://www.commoncraft.com/phishing

Bottom Line

Getting help with your computer

Today I came across a blog post at the WorkAwesome website titled “How to get IT to Solve Your Problem” that said a lot of what I’ve been thinking lately. Here are some highlights:

But you need to write down all the details of what you were doing while it is still fresh. Someone is going to ask these things. While you’re at it, write down what programs you’re running. No, just don’t say word processing. Get specific. Are you using Word? What browser are you running?

Don’t just note what program (Word, Excel, Firefox, Safari, etc.), but what version of that program. Mac users can usually find the version in the application menu. For example: Firefox–>About Mozilla Firefox will tell you what version of Firefox you’re using. Windows users can usually find the version in the help menu. For example: Help–>About Mozilla Firefox.

It’s also helpful to note what operating system (and version) you’re using. For example, are you using Windows XP, Windows Vista, Windows 7? Or, are you using Mac OS 10.5, 10.6, etc.?

Hey, is everything plugged in correctly? Are all your cables securely connected? Is it possible to restart the computer?

Try all the easy fixes. Note everything you’re doing. It can help someone help you.

If you’re having an actual problem (as opposed to just wondering how to do something) always try these fixes first, especially restarting the computer. I’m going to have you do it anyway, so you might as well give it a shot before calling/emailing me.

If you have any kind of access, try the Internet. Enter some keywords like “[stupid program]freezing multiple documents open.” See if there is anything about your problem. It’s really unlikely that you’re the first to discover this glitch.

This is how I find answers to most tech questions, so I know it works. If you don’t find what you’re looking for on the first try, you’ll want to re-word your search and try again. If you still can’t find what you’re looking for, then it’s time to call in the big guns – ask the IT person.

If you need help with searching, check out the “Google search basics: Basic search help” page.

Solving math problems on the computer

I debated making this a separate post, but laziness won the battle. I saw a post today about using the Wolfram|Alpha “computational knowledge engine” to solve complex math problems. The post, on the WolframAlpha Blog is titled “Step-by-Step Math“.

Have you ever given up working on a math problem because you couldn’t figure out the next step? Wolfram|Alpha can guide you step by step through the process of solving many mathematical problems, from solving a simple quadratic equation to taking the integral of a complex function.

When trying to find the roots of 3×2+x–7=4x, Wolfram|Alpha can break down the steps for you if you click the “Show steps” button in the Result pod.

Here’s a screenshot:

Other types of problems

The steps used to solve computer problems can be applied to just about anything. Having problems getting your DVR to record only new episodes of your favorite program? Try to figure out what model number you have, then get on the Internet and see if you can find the answer. You’ll be surprised how much information you can find by doing a simple search.

At its most basic level, social bookmarking allows you to store, organize, and retrieve your bookmarks from any computer (or smartphone) that’s connected to the Internet. The social part comes in to play when you begin to share (and discover) bookmarks with the rest of the world through the use of tags. The nice folks at Common Craft have a fantastic video that explains social bookmarking in plain English:

Click here to view the embedded video.

A comparison of two social bookmarking sites: Delicious and Diigo

Now that you (hopefully) have a better idea what social bookmarking is all about, let’s look at two of the most popular social bookmarking sites: del.icio.us (or just Delicous) and diigo. Both offer similar functionality, but with a few differences. Which one you use is up to you.

Delicious

Delicious began life as del.icio.us in 2003 as one of the first social bookmarking sites and was acquired by Yahoo! in 2005. Yahoo! officially changed the name to “Delicous,” but the old URL still works.

One of the main benefits of Delicious is that it’s used by a LOT of people. More people = more opportunities to discover good bookmarks. A look at the “Popular Bookmarks” section of Delicious as I’m writing this shows 315 bookmarks added in the last minute with the most popular bookmarks saved by over 100 people each, some approaching 200. By comparison, the “Hot Bookmarks” on Diigo have all been saved by less than 50 people.

In addition to the large user-base, Delicious benefits from being owned by Yahoo! This means there’s a good chance it’ll stick around. A couple years ago, a new social bookmarking site popped up that was supposed to blow Delicious out of the water. The site was ma.gnolia. In January of 2009, ma.gnolia suffered a major server crash and all user data was lost. Ma.gnolia then went offline only to re-appear in a limited beta as gnolia.com. (Both Delicious and diigo have the ability to back up your bookmarks to your computer, so if catastrophe strikes you’ll at least have your bookmarks up until the last time you backed up.)

diigo

Diigo came onto the scene in July of 2006 and offered a host of new features to differentiate itself from Delicious and other social bookmarking sites. In addition to bookmarking, diigo allows users to highlight any part of a webpage and annotate the page with sticky notes. These highlights and sticky notes can be private or shared within a diigo group. In theory this is a great feature, but in practice its usefulness is still up in the air.

The second major new feature of diigo is the ability to take a snapshot of a page. Have you ever saved a bookmark only to go back later and find the page no longer exists? With the snapshot feature of diigo, you can take a snapshot of the page as it was when you bookmarked it, and pull it up in the future even if the page is no longer available. This is a very useful feature, but you have to remember to save a snapshot or it can’t help you.

Why should you care?

If you use social bookmarking for nothing more than organizing your own bookmarks you’ll still be way ahead of the game. The old way of saving bookmarks locally on every web browser you use, only to have the list grow to unusable and unorganized proportions, is over. With social bookmarking and tags you’ll be able to find any bookmark, no matter how old, very easily. Once you start taking advantage of the social aspects, you’ll wonder how you ever got along without social bookmarking.

Additional resources

Here are some additional resources to help you learn more about social bookmarking:

• Ultimate Guide to Social Bookmarking
  
• The Several Habits of Wildly Successful del.icio.us Users
• Diigo tour (video)
• Diigo Tutorials

The AudioBoo Record Screen

AudioBoo is an easy to use podcasting app for the iPhone. Once you sign up for a free account on the AudioBoo website, you can download and log in to the free AudioBoo app on your iPhone then start creating your content. You’re given a page/feed on the AudioBoo website so people can subscribe to your podcasts. You can create audio podcasts up to 3 minutes in length. You can attach a photo to each podcast, add titles, text, and even geolocation before uploading.

To learn more about this great app, watch a video walkthrough.

Can you think of some great ways to use this for educational purposes? Sound off in the comments…

What is Twitter?

The techno-babble answer is that Twitter is a social networking and microblogging site that lets you send short messages (140 characters max) to your friends and anyone else who has decided to follow you (more on following later.) The magic happens when you start discovering other Twitterers to follow, and everyone starts re-tweeting (again, more on that later) posts they find interesting.

Before you know it, your personal learning network (PLN) will explode in size to include like-minded individuals all over the world. You’ll discover educational websites and resources you never knew existed. You’ll read eye-opening articles. You may even ask for help or opinions on something, and get more responses than you can imagine. Twitter is a fantastic tool for expanding your PLN.

Beyond expanding your PLN, Twitter can be used with your students. Some teachers use tags specific to a particular class, then have students tweet questions, answers, and general thoughts related to the class. One teacher created a Twitter account used to collaboratively write a story in 140-character chunks. (You can download a free PDF of the completed story here.) A group of volunteers wondered what if Twitter had existed during historical events? Their first project is delivering the Battle of Gettysburg via the Twitter accounts of President Lincoln, General McAllister, and 11 other historical figures. Check it out at TwHistory.com.

You can find more examples in the Additional Resources section at the end of this post.

I still don’t get it. How, specifically, can this help me?!

Still not sure how YOU can use Twitter? Here are some specific examples.

• Imagine you’ve started using Twitter, and you’ve found a couple interesting educators to start following. You’re now getting all of their “tweets” (a tweet is Twitter-speak for a post) showing up in your Twitter account. Each of the people you’re following are themselves following many others…sometimes hundreds of people. When those you’re following find something particularly interesting show up in their Twitter account, they “re-tweet” (RT for short) the post. A re-tweet is similar to forwarding an email. Now you’ll know about that great article even though you aren’t following the original poster. You may even find yourself following some of these new people because they often post interesting articles. Since I’ve started using Twitter 3 weeks ago, my personal learning network has expanded 10-fold and includes educators from across the U.S., Canada, and as far away as England.
• People using Twitter often add “hashtags” to their posts. A hashtag is simply a word preceded by a hash. For example: #education, #edtech, #historyteacher, #swineflu, etc. By using hashtags, other users can search for all tweets that contain that tag. You can even subscribe to a tag using an RSS reader. Check it out for yourself. Here’s a Twitter search for the #historyteacher tag. The key here is that you’ll see ALL tweets containing the tag you’re searching for, whether you’re following the posters or not. This is another way to discover new Twitterers, find new websites, articles, etc. Your PLN will continue to grow.
• Ask the community a question, and receive responses from all over the world. Even though you may only have a couple people following you (at first,) you can ask a question to the entire community by utilizing hashtags. For example, say you were looking for good algebra tutoring websites for your students. If you send a tweet similar to the following, you’d receive many recommendations: “Looking for good #algebra tutoring websites. Any ideas? #edtech #mathteachers“

These are but a few examples, and we haven’t even talked about using Twitter with your students! (Baby steps…)

Nuts and bolts – the terminology of Twitter

I’ve mentioned several terms already. Here are the important terms and concepts you need to know:

• Tweet – A tweet is what you post to Twitter. Tweets can be no more than 140 characters in length.
• Re-Tweet (or RT) - When you RT a tweet, you’re essentially forwarding that tweet to everyone who’s following you. To RT a tweet, simply type RT followed by the username of the person who sent the tweet. (Usernames are preceded by the “@” symbol.) For example, If I sent a tweet that said “Nine Reasons to Twitter in Schools http://tr.im/kt6p “, you could re-tweet that post like so: “RT @tipsbytony: Nine Reasons to Twitter in Schools http://tr.im/kt6p ” There are alternate ways of re-tweeting. Some people us “via” instead. For example: “Nine Reasons to Twitter in Schools http://tr.im/kt6p (via @tipsbytony)” I prefer RT because it’s shorter. Although, if I’m adding my own comment to a tweet, I sometimes use via instead of RT.
• Follow – When you follow someone on Twitter (by visiting their Twitter page and clicking the Follow button,) you’re essentially subscribing to their Twitter feed. Whenever they post a tweet, it’ll show up in your Twitter stream.
• @replies – You can reply directly to a tweet by typing the username (remember the “@” symbol”) then typing your response. For example, if I sent the following tweet: “Anybody know of a good Sushi place in Boston?” you could reply like so: “@tipsbytony – Masoba is good sushi in Boston. http://www.masobaboston.com/” By including my username first, you’re making sure the tweet shows up in my stream – even if I’m not following you! (That’s an important distinction. Think about it for a minute…) Of course, everyone who’s following you will also see the reply. If you get in the (bad) habit of replying with too-short responses, people will wonder what you’re talking about, particularly when they’re not following the person you’re replying to. A bad example would be “@tipsbytony – Yes, I agree!”
• Direct Messages – A Direct Message can only be seen by the user you send the message to, and will not show up in your Twitter stream. To send a direct message, use the letter D followed by the username, then the message. For example: “D @tipsbytony – Do you want to get together for Sushi tonight?” Most desktop Twitter clients (as opposed to the Twitter website) make it easy to send direct messages. More on desktop Twitter clients later.

Twitter clients for desktop or iPhone/iPod Touch

While you can use the Twitter website for most of your Twitter needs, there are much better ways to use the service. There are dedicated desktop applications (clients) for Mac, Windows, and Linux, as well as dedicated apps for smartphones such as the iPhone, Blackberry, etc. Using a dedicated app instead of the Twitter website will greatly enhance your experience.

The Tweetie for Mac interface

Twitter Desktop Clients

• Tweetie for Mac – Tweetie for Mac is my current favorite desktop client for Twitter. The interface is well thought out, uncluttered, and easy to use. Tweetie supports multiple accounts (a MUST if you’re going to use separate personal and work accounts, separate accounts for different classes, etc.) I did some testing, and Tweetie used far less resources (memory, cpu cycles) than any of the other apps, so it should be much better on older machines with less RAM. Tweetie for Mac is still very new and the developer plans to add quite a bit of functionality. For example, there’s currently no way to create groups to organize your various contacts/follows. (You could, of course, simply use separate accounts…) Tweetie is free (ad supported – I’ve found the ads to be unobtrusive and easy to live with,) or $19.95 for an ad-free version.
• TweetDeck (Mac, Windows, Linux) – TweetDeck runs on the Adobe AIR platform, so it works for Mac, Windows, and Linux. TweetDeck has a fairly clean interface, supports groups, and can even cross-post to your Facebook account. The major downside at this time, TweetDeck doesn’t support multiple accounts. Also, my testing showed TweetDeck to be a resource hog, gobbling up lots of RAM and hogging the CPU. Fine if you’re on a fully loaded computer, not so good otherwise.
• twhirl (Mac, Windows) – twhirl is another Adobe AIR application, so it runs on multiple operating systems. However, like the other AIR apps, twhirl tends to be fairly heavy on the system resources. twhirl works with multiple accounts, and can cross-post to other services like Facebook, LinkedIn, etc. If you have enough system resources, twhirl offers a ton of features and is worth a look.
• Twitterific (Mac) – Twitterific is Mac-only, but is another very good Twitter desktop client. Twitterific is lighter on the system resources than either TweetDeck or twhirl, but not quite as good as Tweeie. Twitterific supports multiple accounts and has many other features.

Twitter iPhone/iPod Touch Clients

One of the great things about Twitter is you can use it from just about anywhere. There are several excellent Twitter clients for the iPhone and iPod Touch. I’ve narrowed my favorites down to two:

• Tweetie for iPhone/iPod Touch – Unlike Tweetie for Mac, there is no free version of Tweetie for iPhone. For me, the $2.99 I paid for the app was worth every penny. Tweetie for iPhone is clean, easy to use, and supports multiple accounts. I tried several Twitter clients for iPhone before settling on Tweetie. Your mileage may vary.

• TwitterFon – TwitterFon is a very good FREE Twitter client for iPhone/iPod Touch. TwitterFon is very similar to Tweetie but without the ability to use multiple accounts, which for me was a deal-killer.

Using Twitter with Other Cellphones/Smartphones

There are Twitter apps for Blackberry and other smartphones, but I haven’t used any. If you know of any good ones, please sound off in the comments.

If your phone doesn’t have a dedicated Twitter app, you can set it up to use Twitter via text messaging (SMS.) You can find more information here.

Additional resources

Here are some excellent resources to learn more about Twitter:

• Twitter Handbook for Teachers – An overview of Twitter and ways of using it in education.
• tweeternet – Twitter explained.
• Still Don’t Get Twitter? Maybe This Will Help – Figuring out Twitter.
• Nine Reasons to Twitter in Schools
• 50 Ideas on Using Twitter for Education
• “Where Do You Learn?”: Tweeting to Inform Learning Space Development
• Educators Test the Limits of Twitter Microblogging Tool
• The Art of the Tweet – Good tips for creating Tweets.
• Using Twitter as an Education Tool
• Top 10 Twitter Tips for Beginners
• TOOL: Twitterfall – Good tool for following TweetUps (live Twitter chats between many users.)
• TOOL: TweetGrid – An enhanced Twitter search tool, similar to Twitterfall.
• TOOL: GroupTweet – Send private broadcast direct messages to a group of friends. Good for inter-office communication, study groups, etc.

There you have it. More than you probably wanted to know about Twitter. Hopefully your interest has been piqued enough to at least give Twitter an honest try. You don’t know what you’re missing – seriously.

What the heck is an IMAP anyway?

IMAP is an email protocol that stores your email on a server, and keeps them there until you delete them. This means you can access your email account from any computer, and all your emails will be there. What you’ll be learning in this tutorial is how to move old emails that you want to keep from the server to your local computer’s hard drive. Those emails will no longer exist on the server, but you’ll have local copies in case you ever need to reference them.

Moving Messages to a Local Mailbox

Before moving messages off the server, you’ll want to decide how you’re going to organize them: will you put everything in one big folder, or create multiple folders for better organization? For this example, I’m going to be creating a single folder. In IMAP parlance, a folder is actually called a “mailbox.” Here’s how to create a new mailbox/folder in Apple Mail:

1. Click the [+] button at the bottom of the Mailboxes column, then select “New Mailbox” from the popup window.
2. Next, select “On My Mac” from the Location dropdown. This is where local mailboxes are stored, outside of the server. Give the new mailbox a name.
3. You can now begin dragging and dropping messages from your Inbox (or other mailboxes) into your newly created mailbox, which you’ll find in the On My Mac section in the Mailboxes column. Messages moved into the On My Mac section will no longer exist on the mail server, so will not be available from webmail or from any other computer. They will, however, be available on your Mac and will be searchable from within Apple Mail.

There are other ways to back up or archive your emails, but they have their disadvantages. For example, you can archive an entire mailbox by selecting Mailbox–>Archive Mailbox, but the archive will not be searchable or even viewable until you import it back into Apple Mail.

Now that you know how to move old emails to your local computer, it’s time for some spring cleaning. Before you start, though, be sure to delete any old emails that you truly don’t need. Good luck!

Luckily, there are many sources for free copyright friendly images. Use these sources for you own projects, share them with your students, and be sure to teach your students about copyright and fair use.

Top 5 Sources for Copyright Friendly Images

Flickr

Copyright notice on a Flickr page

Flickr is one of the most popular photo sharing sites on the Internet, with millions of photos available for viewing. These images vary in quality, and in copyright status. When searching for images on Flickr, always look in the sidebar of an image page for the “Additional Information” section. Here you will find the copyright information, including a link to the full license information (usually labelled “Some rights reserved” or similar.) Always click the copyright link to find out if you can use the image. If the image required attribution, be sure to include one wherever you use the image (in a report, PowerPoint presentation, blog post, etc.)

Here’s an excellent article that explains how to use Flickr to find images, including how to create an account, searching strategies, group pools, and using the images you find:
Finding Images on Flickr: http://www.jiscdigitalmedia.ac.uk/stillimages/advice/finding-images-on-flickr/

There’s a specific group pool called “Free Use Photos” on Flickr that contains photos that are completely free to use. No need to give credit. The quality varies, but this is a great source to quickly find images to use without having to research the copyright terms.
Flickr Free Use Photos Pool: http://www.flickr.com/groups/freeuse/

Pics4Learning.com

Pics4Learning is a copyright-friendly image library for teachers and students. Every image in their collection is free to use. Images are organized by topic, most popular, and lesson plans.
http://pics.tech4learning.com/

4FreePhotos.com

4FreePhotos is another collection of user-submitted photos that are free to use in your projects. Photos are organized by category, and the collection is searchable.
http://4freephotos.com/

The Library of Congress American Memory Project

Alexander Graham Bell's design sketch of the telephone. (Source: Library of Congress)

The American Memory Project is a treasure trove of media, from speeches and audio interviews, to video and photos and more. There is no better source for content relating to American History. There are more than 100 collections, lesson plans, and more. The Learning Page for Teachers includes tips for searching the archives, lesson plans, features and activities, and more. If you don’t spend some time exploring the American Memory Project, you’re cheating yourself and your students. Sites like this are what make the Internet great.

American Memory Home: http://memory.loc.gov/ammem/
The Learning Page for Teachers: http://memory.loc.gov/learn/

Naval History and Heritage Online Library of Images

Another great resource for public domain (free to use, no attribution required) historical images. Aircraft, ships, people, places. Need a photo of a British Navy ship from the 1800’s? You’ll find it here. Looking for World War I era photos of women in the U.S. Navy? No problem.
http://www.history.navy.mil/branches/org11-2.htm

Additional Resources and Information

• Kid’s Image Search Tools: http://www.kidsclick.org/psearch.html
• University of Cambridge list of freely available image sources: http://www.caret.cam.ac.uk/copyright/Page75.html
• Internet for Image Searching: http://www.vts.intute.ac.uk/he/tutorial/imagesearching/
  (A free interactive tutorial to improve your image searching skills.)
• Using Images in Education: http://www.jiscdigitalmedia.ac.uk/stillimages/advice/using-images-in-education/
  (A presentation that shows some of the uses and considerations when using images and how they relate to pedagogy.)
• Images in Blogs and Wikis: http://www.jiscdigitalmedia.ac.uk/stillimages/advice/images-in-blogs-and-wikis/
  (An overview of blogs and wikis, considering how they can be used as both sources of images and as tools for managing and presenting your own images.)

Updates:

Jason Flom pointed out some great additional places to find images. Definitely worth checking out:

• http://search.creativecommons.org/ – Great way to search multiple sites (Google, Yahoo, Flickr, etc.) at once.
• Wikimedia Commons – Images, sound clips, video…all freely available.
• Stock.XCHNG – A free stock photo site.