There's also Project Gutenberg, Baen, and several other sites that sell books - drm free. There is also Creative Commons.
I tried a Nook, and wound up telling B&N where to go. They permitted third party spam on the privacy page.
B&N also has a policy that you only own the ebook as long as your credit card is good.
»
www.techdirt.com/article ··· es.shtml