ActivityStreams

Activity Streams is an open format specification for activity stream protocols, which are used for web syndication activities of social web.

Activity Streams is an open format specification for activity stream protocols, which are used for web syndication activities in social web applications and services. Its specifications include JSON Activity Streams 1.0, Atom Activity Streams 1.0, and Activity Base Schema 1.0. Activity Streams is used by several companies, including BBC, Gnip, Google Buzz, Gowalla, IBM, MySpace, Opera, Socialcast, Superfeedr, TypePad,Windows Live, and YIID.