Hoople - 4:38 am on Jul 16, 2010 (gmt 0)
There is also the user's ISP to to help in controlling him. Share logs of his posts as they may be in violation of the ISP's acceptable use policy.
Back in the day I was an owner of a big chat room (3.5k members). We had daly to weekly run ins with many less troublesome than him. We did have a quarterly 'bad boy' that didn't get it after we 'shared the love' with them. For these we privately told him we would 'take whatever actions necessary to protect the other users in the room'. For those that became argumentative during this confrontation we said to them they are not as anonymous as they thought. For the most extreme we asked the local police to intervene as well by interacting with the ISP.
We captured chat logs and IP address. Most had their accounts terminated immediately thereafter. One particularly energetic bad boy got his ISP account terminated twice, in Canada (US based chat), 2nd time came with an extra value trinket....an arrest warrant.
My favorite quotation about this topic (net bad boys) is "we dropped a building on his head" LOL