Happened to come across this from a very short post on Copyfight — great blog by the way … CiteULike is an online service that allows users to quickly and easily share, organize, and maintain academic papers. A really great idea that could actually work. From their front page:

When you see a paper on the web that interests you, you can click one button and have it added to your personal library. CiteULike automatically extracts the citation details, so there’s no need to type them in yourself. It all works from within your web browser. There’s no need to install any special software. Because your library is stored on the server, you can access it from any computer. You can share you library with others, and find out who is reading the same papers as you. In turn, this can help you discover literature which is relevant to your field but you may not have known about.

Might be worth a look … I really like the tagging they have going on.