Mobile Internet usage is improving with the arrival of flat-rate data tariffs, phones better equipped to support browsing and rich content, and operators adopting a more open market model. These are all positive developments but the issue going forward is how the mobile Internet business model will evolve. Will it go the way of the fixed Internet and be dominated by advertising and free services, with operators reduced to providers of commoditised access? In this report we provide a guide on how to get the service and advertising revenue balance right and a view of how operator positioning will evolve as a consequence.