Zotero [zoh-TAIR-oh] is a free, easy-to-use Firefox extension to help you collect, manage, and cite your research sources. It lives right where you do your work — in the web browser itself.
What a cool extension for Firefox. This would have been incredibely useful while in college. Give it a try.
Important Note: This is only compatible with Firerfox v2.0 which is currently in beta testing. Get Firefox 2 here
Wandering the Interwebs 