eBooks in Higher Education, textbooks, rentals – great article

Great article today in Inside Higher Education, All in the Delivery, that discusses the rise of eBooks in higher education, specifically for textbooks.  Kindle, iPad, CourseSmart, FlatWorld Knowledge, and of course print, are discussed in the context of the best method for delivery of academic ebooks.  The author, Steve Kolowich, offers a nice overview and variety of stats and links.  The comments thus far are nice as well.