I think MG is right that "The travel aspect is potentially even bigger. While there are a lot of people going after this problem, no one has nailed the mobile t

I think MG is right that "The travel aspect is potentially even bigger. While there are a lot of people going after this problem, no one has nailed the mobile travel guide so far. When someone does, it’s going to be massive." Partnering with Disney, National Geographic, and various universities to get their guide-content is a smart move. Who is providing good travel guides for mobile? Fodor's? Frommer's? Lonely Planet?