Non DRM Mobipocket format is already supported on the Kindle - just drag and drop.
A cheap casioppeia allows me to read ebooks around 2001.
The Kindle has a built in cell receiver so that you can wirelessly browse, preview and purchase books using one-click.
The Kindle has many flaws, but it does allow you to read a few different non-DRM formats.
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.