It was just a year ago that Amazon surprised publishing executives when previewing the SuperKindle by announcing that Kindle sales had spiked to “35 percent of books where we have Kindle editions.” With this year’s launch of the iPad and Apple’s iBookstore, however, everyone has been quite focused on assessing the impact of this new entrant in the accelerating overall ebook market. Apple’s announced numbers of over one million devices and 1.5 million ebooks downloaded so far sound strong, albeit vague. On the device level, working from reasonable postulations you can view the iPad launch as boosting the market for […]