I agree seeing who did it could cause issues. However, I got a red thumb recently after playing a game. The only thing I could think as to why was at the end of the game I made a simple observation that person x made a mistake guaranteeing the end of the game and his loosing. Here is what I said: person x "made a flaw giving q to " person y. That was it. I believe the person gave me a red thumb for that comment alone since the game was normal and there was not a lot of conversation during it. I mention this all to make a suggestion regarding the red thumb rating since we as players really cannot do anything about them. Perhaps when a person rates another with a negative, they should be prompted to give a reason. Each player could have a rating history of remarks as to the why. Either that cvould be visible to everyone or the player himself, or just the site moderators. It could have who gave it and their reason. Then upone some review of the ratings the moderators could at least see if someone is just giving bad ratings for trivial reasons. Overall, i have no info on whether bad reatings are common or not. But to get over 1 bad rating takes many games to get past. And given that anyone can give them for any reason, disclaimer can be ignored. You are counting on the best intentions of the players, and as the site gets more popular, that is probably not realistic long term.