I was going to say that as well. Some forums need you to have a certain amount of posts before you are able to sell and one (an audio/visual one) banned me forever as you were not allowed to send private messages about items you are selling, it has to be all in your for sale thread. They even read my private messages and even though I did nothing wrong apart from reply to someone message about buying some speakers, because I had replied and said I still had them for sale I got the 'forever banned!