Most of the big names in electronic reading—Amazon, Barnes and Noble, Kobo—like to keep a lid on all information about things like sales figures on devices, numbers of ebooks sold, and more. So when Amazon’s VP of Kindle Content Russ Grandinetti took the main stage at Digital Book World and enlightened the publishing industry crowd about some of that information, everyone paid … [Read more...] about Amazon Divulges Some Critical Numbers at Digital Book World