t was August 26, 2009. That evening I receive a phone call from someone in Japan looking to create free online math and science courses on mobile devices for youth in India using existing shared online video. The following day, I get an email from a colleague at a university in Canada who had just read my new book, The World Is Open: How Web Technology Is Revolutionizing Education. Many points made in the book seemed to resonate with him except for my advocacy of YouTube videos in teaching. Like most faculty members, he was very reluctant to show the YouTube homepage to his class because an offensive video might be featured.