I wonder how much the wifi is driven by the cost difference for 3g? Also, how many only really use at home and then how many people are disappointed that they can't get wifi when they are out?
"Dave Elchoness of GoWeb3D who's one of the early pioneers in the Augmented Reality (AR, but not to be confused with Analyst Relations) industry. In this above video he gives a demonstration of how information (often from the web) can be over layed on top of physical locations"