I definitely have complaints about the existing business models of companies that do this, like opaque (or outright dishonest) TOS. But I agree that privacy leg

I definitely have complaints about the existing business models of companies that do this, like opaque (or outright dishonest) TOS. But I agree that privacy legislation is far from the only obvious answer. Ideally, I'd have control over the location data my phone provides at the active-app, installed-app, and total-shutoff levels. I don't actually mind giving out location data, I just want to know and make a choice when it happens. Fortunately, iOS is rapidly headed that way, and Android has made some promising moves. I do think there's a slightly scarier conversation to be had about the externalities of "selling privacy", though. The Facebook 'shadow profile' situation is the obvious demonstration, but far from the scariest possibility. The possibility of building up a near-comprehensive profile of someone from other people's location, image, and messaging data raises real questions about what it even means to talk about 'personal privacy' in any public setting.