Why doesn't danny insist upon individual identification at sign up?
He can it make so that only he has access to this information thus keeping the site anonymous. He can then assure us all of our privacy but with the caveat that if he is approached by a legal body and is threatened with legal action then identities could be released.
I think this would surely protect him from being sued. Peoples posts would remain fun and controversial but the serious slander, personal barbecues and libelous statements would stop.