Obviously, follow TOS guidelines. That doesn't even need a number, it is standard.

#1. EVERY THREAD NEEDS A POLL. I don't care if it relates to the post, it could be blank for all I care. It is for the purpose of other members gaining gold from your rambling. If you forget polls, I may put an embarrassing one up for you.
#2. NO PICKING FIGHTS. I am fine with squabbles and debate, even discussion, but serious fighting is a no go here. I have a tendency to curse; if you do too, it's fine but lets try not to shove one into every sentence.
#3. ABSOLUTELY NO UNNECESSARY DRAMA. If you have a problem, take it to PM. If I see a thread getting heated, I will ask you to take it to PM and lock/erase it. Do not make personal attacks.
#4. EARN GOLD. Please! TakeEarn my gold, I make it for you. Best way to do this is by completing guild tasks and answering polls.
#5. NO TOWERS/STRETCHING!!! I personally loathe page stretching (including tower quotes and horizontal tails). This is my guild so I get to ban things that annoy me. Ne ner ne ner.