Macmillan is launching DynamicBooks, a platform pitched as web 2.0 textbooks, that lets professors customize and annotate textbooks to “make the book fit your course.” Part of the pitch to students is that the etextbooks cost lest–and of course, since they are heavily customized, they have no real value on the resale market. They plan to sell 100 titles by August. The Chronicle of Higher Education says professors will receive a dollar a book for each customized copy bought that features material they added. “That could add up if a professor’s retooled book becomes popular and is assigned by professors […]