Tell em quick and tell em often, this is a phrase that William Wrigley Jr. would repeat often, as he was establishing his chewing gum empire. He knew he had to tell in order to sell, and he did it most effectively. Even if you do create a better mouse trap, how can the world beat a path to your door, if they don't know about it? So make sure that you tell, and one really effective way to do that is through advertising.