I noticed the other day that everything was between a 3 and a 4. w.0

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Reviewers on Yelp aren't very discerning: They award four or five stars 69 percent of the time (see chart). The local ratings website could combat this by grading on the curve, but would rather force you to click around. Why doesn't Yelp just show how a restaurant's inflated ratings compare

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http://valleywag.gawker.com/5380645/on-yelp-every-restaurant-is-very-special

Well, think about it. You're only going to take the time to review something if it's really good or really, really bad. What Yelp should do is calculate the rating based not only on the average of stars, but the number of reviews (weighted average). That way, a place with lots of fives would appear better than someplace with one five.