A lot of boards have their core group of posters with a few like myself that bounce between several sites. Glad to hear that Gestalt is active, and OTS is doing ok. AFF is pretty active. AspergianIsland is slow, but, Crucibelle doesn't seem to mind.
A linked alliance would be nice and it's been talked about before, but, everything seems to end at talk! Ever since aspergia sank, there has been three distinct groupings, AFF, AI, and WP and it's "splinter" groups. I'd add FAMsecretsociety, but, I have heard nothing about them in a long time. Most people seem to have gone to one group and stayed there. I don't see too many people besides Callaway and myself switching around multiple groups.
Each group seems to have the same focus, but, way different philosophies about getting there. Plus the biggest obstacle seems to be "extreme territorialism", with Alex and Tom/zoologist being the greatest examples of that.