What would it be besides re-hashed blog posts?
I am always interested in those who declare that the print world is dying, it's all digital, yet the Holy Grail of Success among bloggers seems to be a book deal. Not saying this it MMM's point of view, I imagine that he, being smart, considers the Holy Grail to be a nicely monetized blog site.
Beside, anyone can "publish" a book these days (which really means printing the book.)