An interesting thing Amazon is doing. They have unveiled something called Kindle Serials. If you are into a series of books, you can pay for the content upfront and get each subsequent new book delivered automatically to your Kindle.
Read about it HERE at CNET.
I like the idea, but I also worry about it being limiting. As a writer, I want as many people with as many different e-readers a possible to be able to read my stuff. Will this limit me to just Kindle?