Here's the problem (directly from Amazon's website):
Perfectly Balanced Whiteness
We worked on Kindle Paperwhite for over two years to perfect the uniformity of the built-in light, flattening out a fiber optic cable into a sheet, and nanoimprinting to ensure perfectly even distribution of light. Our design uses nanoscale optical diffractive patterns to enable tight control over the direction of the light. Enjoy reading with exceptional lighting uniformity and evenly balanced whiteness across the entire display.
This simply isn't true. The blurring at the bottom really doesn't bother me, but Amazon is describing the screen incorrectly and the images on the website don't illustrate the way the screen actually looks with the light. That, to me, is misleading.