As an author, I’m pretty interested in the changing face of the publishing industry. Tim O’Reilly was on the cover of Inc magazine this month and I’ve been following his musings about publishing for some time. But this whole digital publishing thing has to make an author think about what it means for us. But as a geek, I’m stuck in the technical, wondering if I were to self-publish something straight to the iPad, what would it look like? Not the content, but the files. ePub seems to be the main focus of e-book devices and where the industry is going to go. ePub is a format ratified by the…