I don't see any opportunity on the reflowable ebook side of things but who knows, technology has a habit of breaking rules all the time. (goodlifeguide.com)
Equally remarkable is the fact that Amazon sells DRM - restricted ebooks side - by - side with DRM - free ebooks while making no distinction between the two formats. (medialoper.com)
Switching to portrait view eliminates that problem, since you don't tap to turn pages in that mode, on the optimized ebook side. (macworld.com)