I think the "uncopyrighted" statement could be misleading.
Does Leo really intend to mean that the free version of the book is being released into the public domain or is he simply highlighting the fact that it's not locked down with DRM. No DRM does not equal no copyright and works shouldn't have to be in the public domain to be shared by people.
Leo "uncopyrighted" pretty much everything a few years back, including all of his blog content as well. In fact, he doesn't even require attribution when copied. I've talked to him about it and he said not only has it not hurt him, he feels like it's been a huge benefit to his growth
Does Leo really intend to mean that the free version of the book is being released into the public domain or is he simply highlighting the fact that it's not locked down with DRM. No DRM does not equal no copyright and works shouldn't have to be in the public domain to be shared by people.