Another possible option that was left on my blog was this...
I am 100% Mac/Apple and I just download the Kindle Cloud app on my Iphone and use Kindle Cloud on my MacBook. Once a book is open, it's like an open document so you don't really need wi-fi to keep reading if you're in the car, etc.
I hope this helps some of you!
Published on January 04, 2013 07:23