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" There are a breathtaking number of people whose profiles and posts are public and can be viewed by anyone. George Orwell was wrong, she thinks. In the future, it won’t be the state that keeps tabs on everyone by extensive use of surveillance; it will be the people. They’ll do the state’s work for it by constantly uploading their locations, interests, food preferences, restaurant choices, political ideas, and hobbies to Facebook, Twitter, Instagram, and other social media sites. We are our own secret police. Some people, she discovers, helpfully update their Facebook and Instagram feeds every few minutes, giving potential kidnappers or burglars intimate temporal and geographic information on their whereabouts. "
― Adrian McKinty , The Chain