Anyone who has casually surfed the internet recently is sure to have seen zany personality quizzes on Buzzfeed or Facebook that determine a quiz-taker’s personality by comparing it to that of a character, celebrity, food item...

Written by Eric Epstein Facebook,the third most visited website in the world, was founded by Mark Zuckerberg in February 2004. Originally, it was called “The Facebook” and was only available to Harvard students, but it soon...