Doesn't work, Steam has an even more annoying system and trolls as well as scammers go to the process. Newgrounds is not even inmunite to this either, trolls will make somewhere to 10 accounts, rise them up weekly and they would have something to affect voting. Not even Voat was able to come up with a better voting system, the best they can do is delay the abuse and try to find them.
Voting is always a bad idea.