More than a million people have used Stephen Wolfram's Personal Analytics for Facebook, a web app that generates a fascinating visual report of your Facebook profile: age, gender, relationship status, and location of your FB friends; the number of your friends' friends and the number of their friends in common with you; your friends' most common first and last names; your most 'liked' post; your FB use by day of the week and time of day; and a word cloud of your posts (like mine, at right). Wolfram, best known as inventor of the computer program Mathematica and the search engine...