Closest thing I get to social media is maybe 3 sites I go to.
Marlin Crawler
Toyota Minis
MR2 owners
Mostly to see what's going on in the specified community. Too bad that media is killing this type of site. Even here the need for a modicum of restraint is advisable.
I occasionally check out club4ag, but I can't remember my password and most of that community has leaked to FaceBook.