With all the buzz surrounding the new and improved Firefox 3, its worth talking about Firefox’s Add-ons. For those of you who don’t know, Firefox’s add-ons are small web applications that integrate with Firefox to add or change functionality. They are easy to install and can incredible useful and convenient. Even more, some of them are so useful you’ll just wonder how you used to live without them. No kidding.

I have generated a list of the most popular and recommended add-ons out there that you should know about. There plenty other very cool applications so make sure to check the Firefox Add-ons webpage to find out about them.

StumbleUpon

StumbleUpon

Arguably the best toolbar around. With StumbleUpon you can discover websites based on your interest and on what other people have “Stumbled.” The awesome thing about this is that by click the “stumble” button you will end up browsing very interesting and cool sites that you would have never been able to find without it. On the other hand, you can also use StumbleUpon to look up popular pages from within specific sites such as YouTube, CNN, Wikipedia and Wired. Even more, you can also use this toolbar to bookmark sites that you like and be able to look at them from any computer. WARNING: Be ready to spend many hours using this tool. It is very addictive.