A good comment: "The piracy of online privacy".
"Online privacy doesn’t exist. It was lost years ago. And not only was it taken, we’ve all already gotten used to it. Loss of privacy is a fundamental tradeoff at the very core of social networking. Our privacy has been taken in service of the social tools we so crave and suddenly cannot live without. If not for the piracy of privacy, Facebook wouldn’t exist. Nor would Twitter. Nor even would Gmail, Foursquare, Groupon, Zynga, etc. And yet people keep fretting about losing what’s already gone...."