Michael Sippey: A MetaFilter Proposal... essentially, make people pay for the privilege to post with virtual credits earned through high ratings of previous posts.

Even that wouldn't be enough to make me want to read MetaFilter. And I fear it wouldn't work. Not enough people are going to take the time to yay/nay a post.

And another thing. Censorship. If your opinion isn't popular enough you're not going to get the credit. MetaFilter is cliquey and pop-trendy and inner-circle enough without turning it into a big circle jerk.