Ya favorite tho(ugh)t*takes a look at who is actually on W3C Social Web Community Group*
https://www.w3.org/community/socialcg/participants
Ha, well... ok then.
Jonkman Microblog is a social network, courtesy of SOBAC Microcomputer Services. It runs on GNU social, version 1.2.0-beta5, available under the GNU Affero General Public License.
All Jonkman Microblog content and data are available under the Creative Commons Attribution 3.0 license.