Yelp gained a following by letting people shower praise or air complaints about local restaurants, bars and retail stores. The service's Windows Phone app merges this deep review library with real-time location data. Perform targeted searches for keywords such as "ramen," or drill down and browse by restaurants, bars, cafes and drugstores. Or, just see what's hot nearby. A few features are missing, like the ability to submit a review directly, but the app provides plenty of useful information in a friendly interface.