Use Mobipocket software to convert PDFs to that format so you can read them on Kindle.
Granted the PDF converter seems to have some trouble with graphics PDF's, but for books the converter works very well.
Plenty of free e-books in Mobipocket format show up fine on Kindle.
Devices like the Sony Reader, Cybook, and Kindle DO NOT have glowing LCD screens.
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.