When I see some of the top games with only 10 ratings I can't but to think that this is a bit odd, because if you show your game to your friends they will judge very positively (and everyone can show his game to 10 friends) . On the other hand I saw some very good games with a bunch of ratings, but were a the end far from the first 100.
I know it's hard because if anyone can rate, stuff like this will happen. But in order to make it the best experience for the participants, I think that the rating system has to be rethought.
(We also got two ratings that are very low. I don't know if this was the same guy but when I see some other games I think that we didn't deserve it. But that's how this rating system is... )