While I don't use G+ for anything, a good friend tells me that's where the role-playing game community is centered. He writes blog posts about an RPG he's devel

While I don't use G+ for anything, a good friend tells me that's where the role-playing game community is centered. He writes blog posts about an RPG he's developing, then links to them from his G+ account so that people with an interest will see them. So that's one active community, at least.