Although I dont want to totally disagree with Trader_Dante as you have a point but....
I feel that digging up the dirt in this case could very well be justified in respect to showing how he behaves and his attitude towards, not just traders in general on this site but, to everyone on the net.
He fits the description of a 'troll' perfectly.
Troll (Internet) - Wikipedia, the free encyclopedia)
Everyday people walk into a bar and quietly and politely ask for a drink but not all get served, some dont even get noticed, then this one guy jumps up to the bar screaming and shouting and cursing everyone that crosses his path. He gets served his drink, he then throws it back in the face of the bartender due to not liking the taste. This is of course the drink he ordered, he orders some more drinks and likewise throws them back in the face of the server. This continues whilst everyone in the bar is watching and not being served themselves. Many decent and polite (and maybe quite) people come and go everyday but no one knows because this one guy (who orders twice as many drinks as any one else) constantly rants at everyone, offends people, abuses people and dribbles on about how good he is and how everyone else in the bar are idiots including the server of his drinks.
I ask....How long before the bartender or mananger of the pub says enough is enough?