“Buzzfeed is an entertainment website that collects an enormous amount of information about its users. Much of the data comes from traditional Internet tracking, but Buzzfeed also has a lot of fun quizzes, some of which ask very personal questions. One of them—“How Privileged Are You?”—asks about financial details, job stability, recreational activities, and mental health. Over two million people have taken that quiz, not realizing that Buzzfeed saves data from its quizzes.”