This posting on You Tube is described as how
Small publishers from across the web share their stories about how interactive advertising is helping them achieve the American Dream.
It is worth a look.Entitled I am the Long Tail the film was made by the Interactive Advertising Bureau who say that
Analysts estimate there are as many as 1.2 million Web sites that support themselves by selling advertising, through their own sales forces or ad networks. Most of them constitute the vaunted "long tail" -- small sites serving the refined interests of niche audiences, whose existence is premised on the Internet's near-barrierless opportunity to create and distribute content. But the term "long tail," based as it is on such abstruse mathematical concepts as Pareto's law, can seem bloodless. It hardly does justice to the countless lives made better because of the ad-supported Internet.
Ht-Chris Anderson