Kindles can read a variety of non-proprietary, non-DRM'ed formats. They read TXT, HTML, JPEG, and non-DRM Mobi files directly.
Hack let you convert encrypted Mobipocket files that were intended for another reader so that that work on Kindle.
Devices like the Sony Reader, Cybook, and Kindle DO NOT have glowing LCD screens.
Non DRM Mobipocket format is already supported on the Kindle - just drag and drop.
A revolutionary portable reader that wirelessly downloads books, newspapers, magazines and blogs to a crisp, high-resolution electronic paper display that looks and reads like real paper, even in bright sunlight.