Digg is a community-based popularity website with an emphasis on technology and science articles, recently expanding to a broader range of categories such as politics and entertainment. It combines social bookmarking, blogging, and syndication with a form of non-hierarchical, democratic editorial control. Learn more.
del.icio.us
The website del.icio.us (pronounced as "delicious") is a social bookmarking web service for storing, sharing, and discovering web bookmarks. The site came online in late 2003 and was founded by Joshua Schachter, co-maintainer of Memepool. It is now part of Yahoo! Learn more.