http://www.wired.com/gadgetlab/2011/04/iphone-customers-laws...
http://www.wired.com/gadgetlab/2011/04/iphone-customers-laws...
http://www.apple.com/ca/pr/library/2011/04/27Apple-Q-A-on-Lo...
All smartphone providers track the same sort of data in roughly the same way, it's part of what makes location software work.
Kinda like HIPPA medical privacy rights in the USA: when you go to a doctor, they'll hand you a paper for you to sign acknowledging you understand your privacy rights...then they hand you another paper for you to sign away those rights; if you don't sign both, you don't get any medical service. Imagine a not-distant future where if you don't opt-in to questionable services from Google, Apple & Microsoft, you're flatly denied use of any of their products - digitally ostracizing yourself from most of society.