It's no news to most professors that students who bring their phones to class do more than take notes. Jordan Shapiro at Temple decided it was time to start to take advantage of that tendency and make Twitter part of his class. On Twitter, he observed, "It just makes you think, makes your head spill out ideas." Students also tweet outside of class. If a student is sitting in a bar thinking and tweeting about Freud, Shapiro said, teaching with Twitter is succeeding.