New feature.. I just set the daily limit to 10 positive and 10 negative per day per user, lets see how that works to start. You can vote on your own posts, and I think I set the highlight post to 20 votes for good and then 50 excellent.
On second thought, I turned of the part that lets you vote on your own posts, I just realized you could go through and uses your 10 daily votes all on yourself every day, not exactly bias..