Also it's idea-centred rather than person-centred. I recognize that that's pretentious of me to say. On these types of forums you say "X = Y", and people evaluate the statement solely on whether or not X = Y. On a person-centred site, it's about who said X = Y. Do others agree with that person? Is the statement consistent with prior stances of the person saying it? Or maybe one doesn't care about whether or not X = Y, but they like the person, so they upvote the statement. The lack of upvotes/downvotes and the short character count and whatever else are valid flaws too, but I think fundamentally the forum style of this site is better than the other one.