What is Print On Demand?

Okay... folks. I know some of you know the answer to this question, but seeing is often understanding so below I have a youtube video designed to help everyone understand what a Print On Demand book is and how it is made.

Imagine what a book store of the future will look like. There may be one actual book on the shelf, and a dozen of these machines around the room available for you to stand next to while your book is being printed. Think of all the land fills that we will avoid filling up!