live commercial
n. A form of advertisement in which participants promote a product in real-world settings.

Example Citation:
"Hennessy cognac's ad agency paid hip, attractive twenty-somethings to hang out in bars ordering its client's brand.... It worked: [Jonathan Bond] claims his 'live commercials' helped bump sales up 40 percent."
—Rick Marin and Sarah Van Boven, "The Buzz Machine," Newsweek

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