I'm sure it wouldn't be hard to add a ratings poll/addition to the review page, much like amazon.com does. It would be a great way to see how games rate among other games, from the user standpoint. Maybe it would be a member thing, and you'd have to log in, and could only give one rating per game. (So it is not abused.)

It would not give an accurate rating because either people vote to make the mud look bad, or they are addicts and vote to make it look good.