CiteULike is a free service to help academics to share, store, and organise the academic papers they are reading. 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.

这个东西好象还不错，注册以后它会让你添加一个书签到浏览器里。以后每次你浏览某篇文献，点一下此书签，就可以把文献添加到你的个人文献库里去。你可以共享你的文献库，也可以把citation信息输出成bibtex格式的文档。刚试了一下，好象蛮方便的，但还有很多功能不熟悉，慢慢玩。:)