We are starting to get questions about new social needs, or where the community of social web standard makers are.
They gathered in the Social Web Incubator community group a few years back.
https://www.w3.org/community/socialcg/
(Unlike formally chartered work group, community groups are public, most are run by the community itself, and they are open to all like-minded individuals.)
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.