[ploum]

That’s an awesome idea, I would be really curious to see the result.

(hoping that this does not backfire, for example encouraging people to spam HN with their own posts to gain some karma on the blogroll)

[LordDragonfang]

To address the exact situation in your parenthetical, I considered putting Sum(log(post_karma[i]-k)), for a k such that the expected log value is negative unless you get enough upvotes.