[kevb]

Perhaps something that groups (or even just a weighted score) people and comments by voting habits. If I consistently vote up memes and receive votes from other meme voters, then show me more of that kind of content and give my posts more visibility to that crowd. But if I regularly downvote memes then sink those posts from me, and sink my posts from them.

I imagine tuning such a system would be very difficult though, and you don't want users stuck in a bucket that they don't feel fits them.