I have been using a Kindle 2 for almost a year now and love it. The Kindle app on a Droid works pretty good. If you leave the wireless connection on, on your Kindle, the app will sync with it, so when you open a book on the app, it will be on the same page as the Kindle. Of course anyone with a Kindle knows that leaving the wireless on kills your battery quickly, so mine is always off until I want to download a new book. Not much else to say really, if you like to read and have a Kindle and an Android phone, this app is great when your Kindle is not around. I guess if all you have is an Android and no Kindle, the app still works for buying and reading books, but I am not sure if I could read an entire book on a phone and not go blind.