I think MMO-Champion has just the right size so it's not all a circle jerk/herd mentality, like even more social sites such as Reddit, but at the same time collective interest(s) can bring enough people together to keep it from being boring. That's all I really need to consider it good for a bi-daily / weekly glance, like other sites I prefer reading articles and news on.
Sure, there are cycles of people proclaiming WoW's imminent death, girl problems, and immutable political bashing, but that's par for the course in any niche. The people within those threads fall into the same trends and "intellectual" beliefs as most people on the internet (i.e. "Sheep" are often the same people calling others "sheep"), and I don't think that makes them any more idiotic or caustic than any other type of internet community.
I personally believe the moderators do a fine job, so long as you aren't petty or just aren't posting anything that bears repeating. At least a 4.