del.icio.us
Delicious is a social bookmarking web service for storing, sharing, and discovering web bookmarks. The site was founded by Joshua Schachter in 2003 and acquired by Yahoo! in 2005, then sold to AVOS Systems on April 27, 2011. Delicious uses a non-hierarchical classification system in which users can tag each of their bookmarks with freely chosen index terms. The "del.icio.us" domain name was a well-known example of a domain hack, an unconventional combination of letters to form a word or phrase. Del.icio.us and delicio.us now redirect to the new domain, delicious.com, and the site -- under AVOS' direction is a considerably different in form and function from its original value proposition.