I unno. If I signed up for a forum and tried to be responsible and read the rules before posting, and was hit with a HUGE WALL OF TEXT, I'd most likely say 'fuck that' and never go back.
And I like to read.
Beyond that, specifics make it too easy for smartasses to finagle their way into loopholes. Leave it pretty open, and we can catch people doing stuff like linking to an Amazon page with a book with a nasty title name (that's been done, and it was argued that it was a link, and there was nothing in the rules about non porn links.)
That's also why we put the bit in there about the rules being open for interpretation. :)
Bleah. I'm sick, I just signed on to deposit, so I'm going back to bed.