But why would a privacy minded person even be willing to give third parties their information? Once it's out of your hands, it's out of your control. Forget the sale of information by Facebook or Twitter. What if they get hacked, and their entire database gets exposed to the world? You can't control that.
This is why, even before the internet, those who wanted complete privacy turned into literal hermits.
If one is truly concerned about privacy, they shouldn't make that information available at all. So no Facebook, Twitter, or use of Google services.