Why would you say it's difficult to integrate into the app? I think it's an interesting business model and I'd love to see how it plays out. The one thing I'd

Why would you say it's difficult to integrate into the app? I think it's an interesting business model and I'd love to see how it plays out. The one thing I'd be worried about is being constantly bombarded with promotions (as a gamer) as I get my achievements. It's complicated to scale up though - you definitely need to have enough games and advertisers on the system to make it worthwhile. Definitely want to see how it plays out.