Just a note (not that anyone cares too much): I have decided to not buy Kindle books any more. I have a couple of Kindle devices and I really love my Paperwhite. I just cannot see buying books that I don't own. That's just my opinion. And I will keep my links to Amazon to "purchase" Kindle e-books where possible if anyone still want to continue to go that route.
I will continue to use my Kindle device by sending books to it through Calbre, however.