iPhone users can refuse targeted ads, not tracking
All Things Digital
"Whether or not that creeps you out likely depends on your attitude toward services like Facebook, Foursquare and Twitter: If you spend your time broadcasting your status to the world, it's hard to get riled up about Apple keeping tabs on you, too."
Apple's policy states that the location data it gathers on you will be kept anonymously and used only to "provide and improve location-based products and services.”
>Apple already knows where you are all the time -- and is telling others (VentureBeat)