Maybe this will sound simplistic, but I have trouble remembering that my Kindle version is going to be seen on an electronic reader. When I work on it, it appears on my computer in a word document, so it's all too easy to forget this important fact. Why so important? Because if a Kindle book contains a link on any page, the reader can click on that link and bring the information up instantly.
Here's the paragraph I put at the end of my Kindle editions:
Assuming the reader enjoyed the story at hand, she comes to the end of the story with some regret that it's finished. What to do? Well, here's a list of my other books, and all of those words in gold are clickable links that will take her right to a purchase page for one of my other books.
That's an opportunity too good to pass up. You'll never have a better chance to snag a repeat customer.
Here are a couple of other things you may want to keep in mind when you are thinking about your Kindle edition.