He always changes his ID once or twice, and pastes it about 10-15 times. In AA saloon, so many people have been unpleasant for long times. He is worthy of resident of Nishimura's imitation BBS.
So now I want you to delete it and prohibit him writing permanetly. It is also important for you and 2ch.net, because if you allow him writing, many people may disappoint 2ch.net and go Nishimura's imitation BBS.
I'm very sorry to asu you though you'll be busy, and my English isn't good.