Located on the top right of every post is this nifty white traingle.
Click on it where a post is problematic (e.g. belongs in quick trade, has hacks, etc). A Mod will promptly handle the post.
Well, I do not see where Mikexd mentions that.. But Starvoss has blacklisted him. I guess the transaction was over PM, which I cannot really control; however, I will try to add the Metagross to the hacks list, thanks.