Social Web Working Group
The Social Web Working Group (AKA Social Web WG or Social WG) was a W3C Working Group that was chartered with developing specifications for the social web, based on the outcome of the osfw3c workshop in 2013-08. It was active from 2014-07-21 to 2018-02-13, and some work has continued in the Social Web Community Group since then.
Social WG IRC
The Social Web WG uses the #social IRC channel on the W3C IRC network (irc.w3.org). It's the best place to catch up on discussions and meeting (telcon, face-to-face) interactions: