Yelp gives us a quasi-empirical way to pinpoint the best slice of pizza in half-mile radius, and for that we’ll always be grateful. In the process, though, the service has done something else: It’s democratized food criticism, giving anyone with an internet connection a mandate to opine on cuisine, decor, ambiance, and the overall aptitude of a restaurant’s staff. No matter how little you know about Thai food, on Yelp, your voice is heard. Put simply, the site has added a raucous but meaningful chorus of voices to the greater cultural discussion about food. For the last few years, Brian Droitcour has been turning over an interesting question: Why can’t it do the same for art?