I'm part of a Facebook Group called Vloggers of Youtube (obviously a different direction than gaming), but a couple weeks ago a small group of us got handed moderation roles to the group. Since then we've been working pretty hard to change the culture of the group from a dump'n'run group to one more about community, tips, motivation, ideas, etc. We're approving all posts so all self-promotional posts get denied, we're encouraging discussion, and offering support. In fact, we're trying to organize our first live stream of creators within the group!
Still a work in progress, but if any vloggers read this, stop by!