btw: I was the one who wrote about test certified in the book "how google tests software". I feel a bit bad for not diving into it more, but like Mike says in the blog post, it was dissolved, not an 'active' practice at the time. what was left had merged with the test certified practices at the time the book came out. if the book updates, i'd be happy to include more of the history, and even the blogpost directly. sorries!