The merit of FREE OF CHARGE

I am very interested in what is going to brings us by "FREE OF CHARGE" trend recently. Now I read a book about this theme"FREE-The future of a radical price by Chris Anderson フリー　無料からお金を生み出す新戦略　クリスアンダーソン著（ＮＨＫ出版）" I would like to think this theme thoroughly in this year end because I think this is relevant to educational business.