A. I'm not sure I believe this. I have bought three or four books which were compiled from blogs. They all felt really dated within a couple of years. I read each of them zero to one time and then sold them off; after all, the material is there online if I need to refer to it again. And sometimes the online version even gets refreshed.

B. Books only have more "longevity" than blogs if you are a librarian, or at least an amateur librarian. You must keep them around on your shelf for a long time, dust them off, carry them from place to place. It pains me to say this, as a former book collector and the son of two book collectors, but in the networked era print book archiving is like collecting and preserving fine art: A vital activity for a handful of professionals, but a niche hobby for everyone else. Especially for content that was born in digital form.

C. Books don't collect links. Except possibly to (e.g.) Amazon, which helps Amazon's SEO but contributes nothing to your own. It might be the height of irony for Patrick to publish a dead-trees book which advises you to publish everything on your own web site where it can attract inbound links.