Though we continually see new ideas and developments around e-books, the original printed paper format has always had the advantage of being more personal, with authors able to pen individual messages to fans at book signings. However a new platform — Kindlegraph — aims to challenge that, by enabling authors to send personalized, digital inscriptions directly to the reading devices of their fans. Created by Evan Jacobs, a former programmer at Amazon, Kindlegraph is designed to facilitate a closer connection between authors and their fans. To personalize their e-book, users log in with their Twitter credentials and select from a…