The dream of municipal WiFi always seems to have one problem; how do you pay for it. Google and Earthlink seem to think that in San Francisco, they can support it through advertising. However in Sacramento, Mobilepro, the company that brought wireless to Tempe, Arizona, seems to think they can’t. The trouble seems to stem from demands made by the city and the cities refusal to be an anchor customer of the network. This left Mobilepro with having to pull out of the project.