Originally Posted by Nate the great
I seriously doubt Amazon has less than half the ebook market. And even if they do have a minority share, once you subtract Apple's walled garden and B&N's walled garden Amazon will have a larger market share than standard Epub.
You can subtract Apple's walled garden because a lot of it isn't standard ePub. But you have to include B&N's walled garden as their (no-fixed reflowable) ePub is ePub. It just has a different DRM. So yes, that does count as ePub because it is.