because i have under rate some really gud games because they did not look that gud at first but got gud as you played ..and i have over rated some really bad games ^_^
I think it would be goo if you could maybe spell. Anyways, rerating games has already been suggested and I don't see any drawbacks in it. Just, AG is a bit behind in updates.
I gave a lot of games too high of ratings. I can't remember which ones in particular, but I know I gave about 5 games a 10/10 rating which they didn't deserve.
Play the game in full before you rate the game. I agree that this feature should be implemented and it has been discussed several times before. In the meantime don't be so quick to rate.