I just listened to his free audiobook from audible.com called "FREE: The Future Of A Radical Price" and was absolutely impressed and actually learned something. Then I find this vid. Nice. I share. :)
He told his kids he wrote a book on how to get things for free on the internet...they said "duh". He told people his age the same thing and got "there's no such thing as a free lunch". That's quite a discrepancy, thus was born a book idea.