How did "To Train Up A Child" Become So Popular?

Over the next few days, I'll try to answer some of the questions I've been asked after my appearance on Anderson Cooper's show. This first one is: "How did 'To Train Up A Child' become so popular and in what context is it most dangerous to children?"  Also, I've signed this petition to have "To Train Up A Child" removed from Amazon. You can, too.

Word of mouth made "To Train Up A Child" popular.

Word of mouth will make it unpopular.

Please sign the petition today.