I was pleased with how Chris explained this choice, given that my book does not talk about SEO directly. He says:
“With our focus on search marketing at Search Engine Land, it’s unusual for me to review an academic textbook, but Search User Interfaces is an unusual book—and I mean that as high praise.”
He goes on to explain what he found valuable about the book in more detail. I am really glad to know the book is of value to practitioners as well as academics.