Maybe .

… How E-Reading Threatens Learning in the Humanities - Commentary - The Chronicle of Higher Education. (Hat tip, Dave Lull.)

My own experience has been that reading is reading, usually. Some electronic versions of poetry don't work because they don't really duplicate the poem. But I have a Kindle, and I have the Kindle app on my iPad. I have written about ebooks. But I've been reading since I was a child. It is second nature to me.