Wikipedia moderation system is hidden by default (meaning: you have to hit the history link and wade through a wall of technical conversations) and Wikipedia is

Wikipedia moderation system is hidden by default (meaning: you have to hit the history link and wade through a wall of technical conversations) and Wikipedia is asymmetric: users who create content are a fraction of user that consume content. The latter can't get moderated directly. It works in the sense that less people have the scope to be caught in it and those who do have no in-platform way of communicating it to other users, but Wikipedia is more a collaborative platform than a social network.