Devices like the Sony Reader, Cybook, and Kindle DO NOT have glowing LCD screens.
Non-DRM Mobi books, like free e-books found online in Mobi format, or files you convert to Mobi files, are already supported on Kindle.
Use Mobipocket software to convert PDFs to that format so you can read them on Kindle.
The Kindle supports Mobipocket files directly. You don't need to write a script to do that.
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.