An Academic's Dream: The Zotero Extension for Firefox 2
I have found the dreamiest Firefox plugin imaginable: Zotero.
Zotero provides you with a Endnote-like database for researching, but tuned for the web. I found it this morning, and just spent my lunch hour playing with it. It has the ability to analyze web pages in order to determine quite a bit of the meta data that you need in order to keep track of your web research. Additionally, it allows you to create categories, add notes, and generally do everything that you need to do in order to--get this--output the research data into 6 different formats.
In other words it will output it to any bibliography tool.
Note: the Mozilla addons site is currently experiencing difficulties. If this plugin sounds like it's right for you, try again later.
Nice.