It's all well and good to survey people and have them answer "no" to the question "Do you want to be tracked?" But if Facebook threw up two buttons, one saying

It's all well and good to survey people and have them answer "no" to the question "Do you want to be tracked?" But if Facebook threw up two buttons, one saying I agree to allow targeted ads, and one saying "$17/year" and requires you to give your credit card information, it's naive to think a substantial percentage will hit the $17/year button for a product they've already been using for free. This is, after all, how the internet got to be where it is. Not through the use of 'walled gardens' and paywalls. But by providing ad supported content.