It discusses the screen, the battery, even the OS.
Interesting quote about that:
"Amazon decided that the Kindle would run a modified version of the Linux 2.6.10 kernel. One of the modifications added support for execute in place (XIP), which allows faster and more efficient memory usage. In compliance with Linux licensing, Amazon has made the modified source code freely available."
I wonder under what circumstances it allows for said "faster and more efficient memory usage". Hmmm.