Bike Forums is about the only online forum I participate in these days. I watched as Twitter become a septic tank, and Facebook went off the rails about 3 1/2 years ago. I walked away from both, although our Big Road Trips are still posted on Facebook as we haven't found a better venue (on Day 7 of our current trip to see the moon get in the way of the sun for a few minutes). That's at face book . com / bigroadtrip
I like the sharing of information here, and the ability to help others with information I've developed or that others have shared with me. And if I run into someone who wants to argue for its own sake, there's always the "ignore user" function.