It's black Friday today, and I was somehow reminded of Ron Popeil, of Chop-o-Matic fame, inventor of many well-known household products. He has sold more than a billion dollars worth of rotisseries. I noticed that many of Popeil's infomercials are available on YouTube, including this one featuring his food dehydrator: Popeil, who was quite successful as an inventor, was equally impressive as a marketer. He explains his approach to inventing and marketing here. Tonight it occurred to me that even though I saw Popeil's commercials decades ago, I remembered much of Popeil's shtick. I especially remember the audiences applauding on cue. It was somehow effective even though I knew that these people had been paid to applaud on cue. What I didn't know was how the audience members were paid, and it was not with money, as you'll read here. As you can read in the same article, Popeil is now getting ready to market what he characterizes as his final invention, a deep fryer.