League of Legends is intimidating, and I say this as someone who has thought about giving it a bash and decided against it. Part of my reason for deciding against trying League of Legends was its notoriously obnoxious community. But apparently League of Legends is now a far more hospitable place and this video explains -- in great detail -- why.
The solution is a Tribunal -- a group of high level players that mete out judgement on players who have reported for bad behaviour in the community. The above video discusses precisely what is unique about this system and why it seems to be working. Even for someone like myself, with zero experience in the game, I found it interesting just in terms of video game communities and how they can be rewarded for good behaviour.
I wonder if other communities could use this as an example. Could this work elsewhere?