Ask HN: Any interest in a review aggregator for restaurants?

I was in another city on the weekend and wondering where would be a good place to eat. Yelp's app does a good job but only shows Yelp reviews. It looks like there are about three major review sites in Canada (restaurantica, yelp and trip advisor).

Would anyone else be interested in a restaurant review aggregator that shows nearby restaurants? Has this already been done (well)?