Seriously,
Can we have this kind of update for bazaar? :) I really hate it when trolls come in (if you know what i mean)
Lol! By this time, they should know who to troll and who are the people whom they should give respect. :) I mean seriously. :) This bit is one of my peeves. :) Please nick. :) I know you love me :)
The use for this suggestion is obvious: enterprising scammer posts ridiculous price, and then bans everyone who wants to come in and say it's a ridiculous price. Bad idea.
Also prevents discussion. I come in wanting to defend against a guy ranting against Winmillion, and he'd ban me. "Out! You disagree, you out!" I'd assume that this update would have to be forumwide, as the forums seem a bit too simple to have this ability for just one forum alone.
Completely wide open for abuse, as everyone else has pointed out. We already have moderators; bring this sort of problem to them.
Awkward...