opc,
I find that when the folks from the other badder message boards come over to my hubs that if you give them an inch of rope they will take a mile instead. Give them fair warning that this is not the typical message board. Post the rules of the road for them and gently remind them that there are other places they can go to play games but that Agoracom is for serious discussion. If they continue to offend then send them packing back to their other message board.
Doc