The Community of Single People (CoSP) is an online Facebook group started in July 2015. It is a place for discussing all aspects of single life except dating or other attempts to escape single life. It is a closed group, so you need to ask to join. As long as you are not trying to use the group to find a date, getting admitted should not be a problem.
Here’s what I’ve written about the Community of Single People, beginning with the first announcement:
The community no one knew we needed (when there were around 600 members)
A global singles community for friendship, not dating (3-year anniversary post)