> Same thing applies to things like Yelp reviews. Maybe a user with close to a 5-star lifetime rating average should have his reviews "renormalized" to 3's because his standards are probably just lower than the guy with a 1-star average.
Another problem is the perception of star ratings. It seems like 5 (maybe 4 also) is the only "positive" rating for many people. Anything less and it might as well be a 1.