How is it to use? Actually, pretty darned good. Readability is high, and you can change the font size to your liking. Turning pages is just a matter of swiping your finger across the screen. A single touch gives you access to the table of contents of any book, and you can bookmark pages.
I liked the idea of the Kindle app so much, I actually broke down and bought the Kindle 2. The two devices interact, and you can have all your books on both devices. In fact, the iPhone Kindle app will come up on the same page you left off on the Kindle 2, or vice versa. I thought that would be an automatic function, but you have to tell each device to sync when you leave. Your mileage may vary, but that's what I am seeing.
Of course, even that rather cool function is a bit tricky with the iPhone, because its smaller screen can't display as many words as the Kindle 2 screen. Even though you are synced, you won't get a page that looks exactly the same. No big deal, though.
Read on for more...