I'd like a rant about books on which TV shows and movies are based! If you're getting your book made into a TV show and it's popular and you're getting it updated with a shiny new cover, PLEASE MAKE AN E-BOOK OF IT TOO! Vampire Diaries, I'm looking at you. There's no PDF/EPUB version of the first 3 Vampire Diaries books, but there is of "The Return". I'm enjoying the show, I want to read the books that correspond, not a book that's a few years down the line and bears no relation to what I'm watching. It's very frustrating.
This also brings me on to book series. If you've written a book series, don't convert Book 3 or 4 onwards to ebook and not start at the beginning. It's stupid and instead of forcing me to buy a paperback, it just means I'll buy someone else's book series and read that instead!
*and breathe*