The little social groups formed on this site don't really get much, if any, activity. I would say most people don't even know that those Groups exist here. Have you tried Meetup.com? I just searched it and found The Pittsburgh Alternative Relationship Group
. You could also start your own Meetup group, if that one doesn't suit you.
Have you searched and visited our Golden Nuggets forum? Here is info I posted there a while back: