...as evidence.
No, seriously.. Brent's philosphy for the forum is one of open dialog and no censorship. As such, many times, things go a lot further than some would want... but the concept of self-moderation by the group at large is always in play.
When a thread becomes a personal attack or hateful in general, it is either closed or deleted, based on a judgement call of content. Fortunately, those incidents are rare.
Obscenities don't require much thought and are usually deleted.
Certain posterior shots have been 'grandfathered' as acceptable, though.