Thanks for the clarification on the Qi screen. There are a few factors that make ebook screens usable in my opinion. I would say that you need a certain level o

Thanks for the clarification on the Qi screen. There are a few factors that make ebook screens usable in my opinion. I would say that you need a certain level of dpi to handle small font rendering well. After a certain threshold I don't know if it benefits you as much. The second factor is screen size the n770 had a 4.1" screen which leads to a lot of context switches. The kindle has 167ppi on a 6" screen. The kindle screen allows for much less context switches which are jarring to the mind. (context switch in this example would be turning the page) With the iPad's 10" screen the context switches will be much less even still. (Though the iPad has the least ppi of all the devices I mentioned I think it should be over the minimum threshold for readability)