What state should you move to based on your personality? What character on “Downton Abbey” would you be? What breed of dog is best for you? Some enormous percentage of Facebook’s 2.13 billion users must have seen Facebook friends sharing results of various online quizzes. They are sometimes annoying, senseless and a total waste of time. But they are irresistible. Besides, you’re only sharing the results with your family and friends. There’s nothing more innocent, right?