The ingredient digital ink for Kindle, E Ink, is working with Plastic Logic to develop a reading tablet to display books, newspapers and magazines. Many content owners in the industry view Amazon's middle-man role as unfavorable in that they set the pricing and the layout of content for the Kindle. Since the early 2000's, firms producing the reflective layers of the nanostructured films of titanium dioxide that create the solid white background have come down the learning curve. This process improves reflectivity and contrast while eliminating the need for backlighting. Innovations in bistable voltage have optimized power management. Newer displays, for example, can operate on very low voltage that only charges when the image is updating. Amazon commercialized this type of technology in high volume with the Kindle. Publishers complain that the Kindle doesn't allow for advertising and it is a poor substitute for the feel of pages - they would. Warren Buffet said recently he would not buy any Newspaper publishing company "at any price" because of the business model erosion. I see potential consumer confusion with the proliferation of these devices, especially if the industry takes different directions from Amazon, Apple, Sony, Gannett, NY Times and other publishers struggling to re-invent themselves.