The Kindle has a built in cell receiver so that you can wirelessly browse, preview and purchase books using one-click.
The Kindle only allows the reading of Amazon DRM-protected content.
There are converters available from Amazon and/or Mobi for pdf and doc files.
The hack allow ENCRYPTED Mobi files to be read on the Kindle. So you can buy a DRM-protected mobi book and read it on Kindle.
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.