@Criminy Yeah, it's a weird thread because I've never met anyone dumb enough to say, "SELLING ACCOUNT $1,000 PM!" in-game before. This guy's English obviously isn't the best, so I'm hoping there was some misunderstanding and he was trying to sell something else.
As for "you shouldn't be banned for text in chat", uh, no. Soliciting illegal actions should definitely be a bannable offense. Being excessively rude or offensive should be bannable. When you play Vindictus, and that includes when you use its chat system, you abide by the rules of the EULA/ToS.
I do agree, however, that there should be an appeal and investigation process that can unban those who were joking around or had their account hijacked or the like.