I agree. I think a sense of community is the main driver of quality comments: that's why news sites and YouTube have such poor comments, because most people f

I agree. I think a sense of community is the main driver of quality comments: that's why news sites and YouTube have such poor comments, because most people followed a link to that specific article/video and have no long-term relationship with the site; whereas forums on a site devoted to a single topic do much less badly. But I don't think real names are strongly causally connected to a sense of community.