I place iBooks in the same bucket as Kindle, Sony, and Nook apps for iOS, or Android, or BB, or whatever mobile OS floats your boat. Talk about minimalist! These apps all share at least one thing in common--almost no formatting options. It amazes me that after all these years none of those companies understand why we want small or no margins on a tiny screen. My guess is that their decision makers never read, at least not on small screened devices.