Guess what? If you have a 3G enabled iPad or an iPhone, you're being tracked. And I'm not talking casual. Your locations are stored in a file on the devices and are backed up to your computer if you sync.
I would like to point out this is one of the great things about Open Source. If a feature like this were baked into Android, people examining the code could find it and use their GPL'ed rights to remove it.
Apple has done a lot good. They are destroying the M$ monopoly and the Flash monopoly. Their proprietary platforms are turning out to be FOSS' best friend.
But guys, if you like Apple, remember -- just because you like them doesn't mean you can trust them.