Which Pop Tart flavor matches your personality best? That’s the kind of quiz that drives a lot of traffic to Buzzfeed – traffic that equals revenue for the company. Many of those quizzes are written by people who aren’t on staff and don’t get paid. Former Buzzfeed staffer Matthew Perpetua wrote about one of the biggest quiz generators, Rachel McMahon. As a teenager, she created nearly 700 of Buzzfeed’s most popular quizzes.