If Pre have it, then so do the Feds
I'd be more worried about this if I were you. Under US telecoms legislation and the domestic spying (Sorry, anti terror) laws brought in by the Bush admistrration, if Pre gather this information on you then the Feds can more or less demand that it's handed over. Some of it they don't even need a warrant to get.
Suppose that you have an app on your phone that the Feds don't like, like that iPhone app that tells you where the legal marijuana points are, or one which tells you where public access wifi networks are with admins don't record usage data (Essentially anonymous internet access), or if your GPS data shows that you visited a neighborhood with a crystal meth lab in it? The Feds can get this data and your GPS data off of Palm and can violate the Fourth Amendment in all kinds of funky new ways.


