I'm on FB and SL. On FB, I keep up with my old SL friends I see maybe once a year or three. On SpyderLovers, I make new friends and help people when I can. I'm a chick, but know a thing or two about mechanics. If I can't help you, I won't post.
I've been on other long running forums before that closed down. The administrators 'moved on.' A trove of information was lost to those seeking help. Very sad.
Whatever forum I'm on, I think of myself as a guest in someone's home. Some people think they can just sit themselves down, put their feet of the coffee table and spill beer on the carpet.
Free speech is a right, but you still have to deal with the repercussion of your action.