BibSonomy bookmarks for /user/smartens/internethttp://www.bibsonomy.org/rss/user/smartens/internetBibSonomy RSS Feed for /user/smartens/internet- Virtual CommunitiesRheingold's Virtual Communitieshttp://rheingold.com/vc/booksmartens2009-06-02T16:26:54+02:00collaboration communities internet Rheingold's Virtual Communities