Your reply motivated me to look, and my vague recollection is correct: I exchanged a couple of brief emails with the author back in 2007, when the articles did indeed first come out.

However IBM did it, they were entered into some sort of site publishing schedule such that he'd lost track of just when they were coming out.

Seemed a nice enough fellow. From the articles and his bio, I imagine (perhaps incorrectly) his motivation was more pedagogical than remunerative.