U.K.-based search engine Yell.com has partnered with AKQA to provide GPS-based ads in Central London. The ads will display local businesses within walking distance on interactive displays. AKQA will also put up interactive outdoor displays, in-theater ads and more to support the partnership. Finally, transit stations in the area will run video spots highlighting just how useful Yell.com is in finding information for living. I love the idea of GPS-enabled ads, especially in crowded cities with tons of public transit. The possibilities are endless and could really be a benefit to local businesses.