You've probably read about this is the tech news today or yesterday. It's worth five minutes to download and run this app which illustrates the data stored for your iPhone. http://petewarden.github.com/iPhoneTracker/ I'm ambivalent. The data is interesting. The idea of having a record of my travels is pretty cool...if I knew about it and had control over it, and its security. That it's secretly collected and secretly stored as unprotected plain text is unsettling..