Delicious

Delicious[1] (stylized del.icio.us) was a social bookmarking web service for storing, sharing, and discovering web bookmarks. The site was founded by Joshua Schachter and Peter Gadjokov in 2003 and acquired by Yahoo! in 2005. By the end of 2008, the service claimed more than 5.3 million users and 180 million unique bookmarked URLs.[1][2][3] Yahoo sold Delicious to AVOS Systems in April 2011,[4] and the site relaunched in a "back to beta"