What are the rules for the server?

Hello! I read through most of the threads here but have yet to see any sort of official rules list.

From what I gleaned bombs, sticky bombs and TNT are prohibited.

Also I've heard of some sort of kill tile abuse, I'm wondering exactly what that means. How many blocks in what span of time would be considered abusive? Reason being that I'm an efficient miner and would probably tip that scale off if I wasn't careful! =P

And I'm also assuming grenades and hellfire arrows are ok.