While the industry in the US forges ahead with implementing highly accurate E911 based mobile solutions, the non-government mandated countries are, ironically, putting up location services that are laser focused to meet commercial demands. In Sweden, Botfighters is a game where you can start "messaging" somebody to death as soon as they are actually physically near you. I think the privacy police would outlaw that here in the US, unless the opt-in approach proves to meet the privacy concerns.