I think that points to the "bubble". It doesn't really cost* the user anything to view the ad, but the site gets revenue from it. *economically. Right now the

I think that points to the "bubble". It doesn't really cost* the user anything to view the ad, but the site gets revenue from it. *economically. Right now the dollar value of your security/privacy/etc is $0 because you generally aren't willing to pay more for it.