Amazon today in a talk provided some rare added insight into the Kindle by disputing Apple's market share claims. The store's VP of Digital Ian Freed believes assertions the iBookstore has 22 percent share are false as Amazon has too large a share, at 70 to 80 percent, for Apple to take the rest. With a field that also includes Barnes & Noble's Nook, the iBookstore's actual share is likely smaller, Freed said.