One of the biggest cultural changes in the United States over the past 25 years has been the widespread acceptance of sexually explicit material - pornography.
In the space of a generation, a product that once was available in the back alleys of big cities has gone corporate, delivered now directly into homes and hotel rooms by some of the biggest companies in the United States.
It is estimated that Americans now spend somewhere around $10 billion a year on adult entertainment, which is as much as they spend attending professional sporting events, buying music or going out to the movies.
Consumer demand is so strong that it has seduced some of America's biggest brand names, and companies like General Motors, Marriott and Time Warner are now making millions selling erotica to America. Last November, Correspondent Steve Kroft reported on this billion-dollar industry.
