Last week, South Park aired it's 1607th episode! The episode highligted a type of business, using a form advertising you see everyday when your driving around...sign spinning!
"Cartman launches a gemstones network show and creates a very lucrative business. Stan searches for the real value of a piece of jewelry that was a gift from his Grandpa. Meanwhile, Cartmans lucrative new business preys upon an extremely vulnerable clientele."