Delicious social was a social bookmarking web service thatallowed users to store, share, and discover web bookmarks. Users could tagtheir bookmarks with keywords and view them by tags or in stacks. They couldalso see what other users had bookmarked and follow their interests. Delicioussocial was founded in 2003 by Joshua Schachter and Peter Gadjokov and acquiredby Yahoo! in 2005. It was later sold to AVOS Systems, Science Inc., andPinboard, before being discontinued in 2020.

Delicious' role was storing, sharing, saving, managing, and discovering web bookmarks for users.

Delicious used a non-hierarchical classification structure where users could tag each of their bookmarks with freely chosen index terms.

Companies could set up a Delicious to share and organize links without having to look through emails to find a specific article. Users could also use Delicious to bookmark a page for later.