There is something to be said for simplicity, especially when it comes to applications that leverage web APIs for mobile devices. Enter Sparrow, an application for the iPhone, that serves as a good example of how a few web APIs can be elegantly implemented for use on a mobile device.
Boasting 400,000 restaurant menus spanning over 13,000 cities, the SinglePlatform API is filled with valuable content. And it's giving it away to developers for free. The company has big publishing partners signed on, including the New York Times and Foursquare. And restaurant menus are only its first act.