I'm sorry, but I think that's a horrible idea. You can't just prohibit people from taking part in the community until they have become a VGC geek. This site already kinda suffers from a large focus on post count (have 6 posts and your arguments are overlooked, have 3000 and you can turn all eyes towards you everytime you post). Please let's not discourage people from joining up, and just ban said spammers and erase their threads. We don't need a Patriot Act.
I drink your milkshake.