Actually, did you know that Salvador Dali was involved in a scam in the 80's. A van load of signed blank printing pages were found in New York, which led to an investigation. See, an artist signs his work as a way of proving that he actually pulled the print himself, keeping it in the one-of-a-kind category. Nowadays, it has become popular for artists to have someone else do their printing, but Dali was standing behind the old ways of printing, which makes the prints one-of-a-kind still, even though they are prints. The discovery of the van blew the value of Dali's work into smithereens, and proved he was fraudulently marketing his work.Pollock is pretty easy target for an "Art or Crap?" discussion.
But, turning around and selling his work at places like head shops and Spencer's in US malls, made him even more famous than before. And, you would see him the Johnny Carson shows and other talk show venues.
Sorry, I get carried away.