Granted the PDF converter seems to have some trouble with graphics PDF's, but for books the converter works very well.
There are converters available from Amazon and/or Mobi for pdf and doc files.
Amazon can do a lot of money only from selling kindle, like Apple does with the iPod.
If you read some of the Kindle discussion groups, you'll see people complaining about "no backlighting", and then a few days/weeks later they will be lauding the fact that it has no backlighting.
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.