The admins implemented a policy where you need to have 50 posts in this subforum before being able to post in the rest of the forums. It was put into place in order to give us a better chance to catch the "virwex" / "mtgix" / "bitcointalks" scammer spammers before they had the opportunity to flood the entire forums. This way, we are usually able to notice them and clean it up before they reach the 50 posts necessary to be able to flood the rest of the forums.