I started this thread last night but it got ghouled [fair play to the lad, apparently made laughs]

When do threads get deleted?
Is it only when they get ghouled?
How often are the moderators online?
What about RLY offensive threads (rape/racist centric)?
What are rules on multiple/repetative threads (see georgiabeth) or threads that go to far (see _vikram vs mirri, asperger's, public cunt etc...)

I want answers dammnit!