What do you want? A software platform? a credo and list of values to uphold? Rules for conduct? Moderator advice? Are you looking for software or books and interviews? My cousin started an online community through wordpress for her patients (she is a physician treating depression among other ailments) and I can ask her about the books and research papers she collected in creating it and making a case. She uses a wordpress plugin and has been having success, but it will never actually lead to a social network replacement until she hires someone to build out a whole 'nother service. So, provide more info please.
More like case-studies, books, posts, and interviews.
That would be interesting, thanks!
Yourself. And maybe some helpers.
People often underestimate how much work it is to connect with people.