According to the Art Marcovici website, Cashvertise is the answer.
The average 100 USD Note is circulating for 7.4 years, it changes hands on average 3x per week, so each ad on a 100 USD note is seen by more then 1000 persons. I would say, this can easily be sold at 5 USD/note.The other notes are much shorter in circulation:
$1: 1.8 years
$5: 1.3 years
$10: 1.5 years
$20: 2 years
$50: 4.6 years
On average an ad on a bill might only be sold for 1 USD, however, given the fact that each day the bureau of engraving and printing produces 38 Million USD bills, this could result in $14 billion USD annually.
If the design is well choosen, it would not change much of the billÂ´s appearance as we know it, here are some examples:
Photos by Art Marcovici.
Editor’s Note: I see a problem with this idea. The world is moving closer and closer to a cashless society using electronic shopping and banking. That means less paper currency.