Here's another site/app for getting restaurant reviews in a handful of cities in the US. These are reviews from Chefs about restaurants they like. I've tried a few, but some of what is recommended seems to be: trendy, weird food, overpriced, and strange. At least the reviews are focused on food and service and not subjective to the whims of folks from other sites:

Chef's Feed

Chowhound seems to be one of the better sites IMO. It takes too much time to sort through some of the silly feedback sometimes, on many other sites. What I do to get better info (when I have time) is if I see a review on Yelp that seems sensible, I'll look at the reviewer's other reviews.

Jonathan Gold here in Los Angeles does choose some good places, but sometimes the 'really ethnic' foods (aged duck eggs, strange animal parts) are not what I want. I agree with about 25% of what he chooses, but the style, sincerity, and honesty of the reviews are appreciated.