Sure, fine, make your single-use devices. But all these e-readers — the Kindle, Nook, Sony Reader, et al — are all focused on the wrong single use: books. (And in the case of at least the Nook and Kindle, the focus is on buying books from B&N and Amazon. The Kindle is more like a 7-Eleven than a book.) The correct single use is reading. Your device should make it equally easy to read books, magazine articles, newspapers, web sites, RSS feeds, PDFs, etc. And keep in mind, all of these things have images that are integral to the reading experience. We want to read; help us do it.