Shane Greenstein is the MBA Class of 1957 Professor of Business Administration at the Harvard Business School, and co-chair of the Digital Initiative. He teaches in the Technology, Operations and Management unit. Greenstein is co-director of the program on the economics of digitization at the National Bureau of Economic Research. He recently finished a book about the development of the commercial Internet in the United States, called How the Internet Became Commercial: Innovation, Privatization, and the Birth of a new Network. He also publishes commentary on his blog Digitopoly.