This evening, almost a year after the book's publication, I received my very first email in explicit response to that call to action:
Heath, I just got off a plane where I finished reading The Big Moo. I have a strange feeling that you either want to meet me, or are realizing that you made one of life's inexpensive mistakes.
Attaboy, Will. There's an email in your in box. The ball's in your court!