Here’s a link to a highly interesting article from MIT Technology Review on “The Real Privacy Problem,” by Evgeny Morozov:
http://www.technologyreview.com/featuredstory/520426/the-real-privacy-problem/
And this is my favorite paragraph, describing how our data might be used against us (now and in the future):
“Thanks to smartphones or Google Glass, we can now be pinged whenever we are about to do something stupid, unhealthy, or unsound. We wouldn’t necessarily need to know why the action would be wrong: the system’s algorithms do the moral calculus on their own. Citizens take on the role of information machines that feed the techno-bureaucratic complex with our data. And why wouldn’t we, if we are promised slimmer waistlines, cleaner air, or longer (and safer) lives in return?”