an interactive Web tool designed to assist teachers and students in producing reference citations for crediting information from other people. You merely...
social bookmarks manager; allows you to easily add sites you like to your personal collection of links, to categorize those sites with keywords, and to share your collection not only between your own browsers, but also with others.
a technology news website that combines social bookmarking, blogging, RSS, and non-hierarchical editorial control. With digg, users submit stories for review, but rather than allowing an editor to decide which stories go on the homepage, the users do.
an open, free directory of species. This will cover animalia, plantae, fungi, bacteria, archaea, protista and all other forms of life to the extent that our users allow us.
Mailing lists are funneled into news groups. Gmane does spam detection, cross-post handling, has a TMDA-fueled encryption/forwarding service, a web interface, respects X-No-Archive, supplies RSS feeds, uses SPF, features user-defined filters, more...
allows you to create a chat community and talk to people who are currently reading the same web page as you are. Just add gabbly.com/ before the site's url. For example gabbly.com/cnn.com (IE not supported)