Startup Idea : Local Eats

Where do the locals eat? My dad had a rather unique way of finding a good restaurant. He would often say to me that if, for example, it was Chinese food you were after, then follow a local Chinese person around and see where he or she eats! He figured that the best way to tell if a Chinese restaurant was any good was if Chinese people ate in it! This is where this idea originated. I would like your feedback on developing a review App that has a similar feel to foodspotting (rating a dish rather than the restaurant) but with a social aspect being able to ‘follow’ a local Asian or local Italian expert as an example. The aim is to discover not only where the locals are eating, but what they are eating as well. So if there is a large number of Italians eating lasagne at “Luigi’s Restaurant”, then I know it must be good! You can also ‘follow’ friends whose opinions you value to see what and where they are eating. Users of the App can also rate the reviewers/recommendations made by the ‘local expert’ (like a thumbs up or thumbs down but with a twist).