Okay, it seems that some people need reminding of this rule: do not publicly accuse someone of wrongdoing. Even if you believe you have undeinable evidence in support of your claims, you still may not accuse people. It only ever leads to infighting and flame wars, which usually lead to mass bans. Just because the moderators can ban people, it doesn't mean we want to. But don't doubt that we will if you leave us with no other option. Use the grief reporting function on the PSN homepage.
This ban on accusing people also applies to the report post function. Some people seem to think that it's entirely acceptable to use the report post function to report bad traders. So that there is no doubt in your minds, I will say this: it is still banned. I've just had to issue a flurry of warnings and infractions to people for doing just this overnight. Don't think that just because a reported post is between you and the moderators, it is okay to accuse others. Chances are that you'll be the one to be n the receiving end of moderator action for ignoring instructions.