I have an iPod Touch that I formerly used for music, and still use for my Audible books. iTunes App Store has come out with a Kindle book reader app that I saw recommended on another BB. It is free. So, I downloaded it onto my Touch, bought a book from Amazon and was very pleasantly surprised how 1) easy it all was and 2) how nice it is to read, even on the small screen.
Please, Amazon, put out a Droid version!!! Soon!