Amazon Kindle for iPhone & iPod Touch
Even if you could never justify spending three Bens on a Kindle, you can still partake in the mobile eBook revolution. Amazon Kindle for iPhone & iPod Touch (Free) is a new app that lets you buy and download Kindle books and read them on the go — without buying the $360 Kindle 2. In addition to having access to more than 240,000 books, the app lets you adjust text size, add bookmarks, and get free samples. If you already have a Kindle, the app's Whispersync technology saves and synchronizes your bookmarks across your Kindle and your iPhone.