SubscribeStu.dicio.us - social notes for students
August 20th, 2006
Link: Stu.dicio.us
(via SolutionWatch)
Diigo - annotate the web with your social network
July 28th, 2006
Link: Diigo
(via Stowe Boyd)
LibraryThing - social networking for bookworms
July 13th, 2006
Link: LibraryThing
(via BoingBoing)