Following on the heels of popular social bookmarking services such as
del.icio.us and Furl
is CiteULike, a service specifically
geared toward scientists and researchers. It's perfect for keeping
track of pages you've read and will read, and it can even import and
export BibTeX records for easy use with your document typesetting
system. Way, way cool. Thanks to Alvin Chin for telling me about this!

(See, talking to your research labmates is a Good Idea.)