As in you missed out on good restaurants due to "too high" of a rating that you didn't trust but should have? All rating systems (IMHO) can be gamed and I've yet to find a good way to prevent this other than Amazon's "Verified purchase" which I love. Maybe yelp would be better if you had to somehow prove you ate there? At that point restaurant owners could produce fake "proof of purchases" for the fake (good) reviewers to use.