More than half of smartphone owners are armed with a restaurant application, and 55% use a multi-restaurant app such as Yelp, Urbanspoon or Zagat, according to an Interactive Advertising Bureau survey. That's creating multiple opportunities for advertisers to reach a generation ripe for food discovery. "This research highlights the fact that the mobile Internet is increasingly becoming a vital tool to help consumers navigate their everyday lives -- even when it comes to simple tasks, such as ordering a pizza," says Anna Bager, vice president and general manager of IAB's Mobile Marketing Center of Excellence.