It should stabilize soon - once games have 5-10k votes or so it will be hard for even a small group of people to manipulate...

I think people are already abusing it. I've seen many troll scores to downvote some games and upvote others. Since there is such a small sample of scores its even easier to manipulate it. Many games are constantly changing positions, falling, while others rise and then eventually fall. It will take a lot of time for it to stabilize, if ever.

1998 and 2002 were great years in gaming