Kindle Lets Reader Interact With Author

Amazon’s Kindle has an interesting feature in beta -as you are reading a book, you can direct a question to the author using @author so long as you have a twitter account. You could do this directly from Twitter, of course, but this way you can ask questions as they occur to you. The question could be answered by anyone who’s bought something from Amazon, but if you get lucky, it could be the author himself/herself.