SA has internal problems too. There's a constant slow cycle where the individual topic forums become boring and straightlaced because the users get proud of how mature they are, so they start new subforums where people are allowed to make "bad" but interesting posts as long as they pretend to be doing it ironically. Then everyone moves into those and it collapses, because they really did become bad posts.

Sometimes they move offsite instead, usually because the site admins didn't actually like the topic enough to make more forums for them, or because the admins banned all the users because they had formed secret IRC cabals conspiring against them.

The last stage is that the admins change the forum CSS so it's unreadable. I haven't figured out that part yet.