Granted the PDF converter seems to have some trouble with graphics PDF's, but for books the converter works very well.
How do you load other eBooks onto the Kindle? Just add Amazon DRM.
The Kindle only allows the reading of Amazon DRM-protected content.
Hacker Igor Skochinsky used DRM to load Mobipocket books onto his Kindle. Using a series of scripts, he's able to convert eBook files to Amazon's AZW format and then add the necessary serial number DRM, specialized per an individual's particular 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.