Maybe only allow people to be able to vote on stuff after gaining a certain number of points. By doing this, it prevents the temptation to vote down other things from new users, and prevents such incidents as with Dj11, who votes down everything in sight without proper knowledge or etiquette of doing so. This M.O would help keep things fair; they'll only have voting influence once they learn the ropes. On top of that, it keeps people from making duplicate accounts and voting their own stuff up.