People who referred 10 friends to the Procter & Gamble website for Physique shampoo (www.physique.com) received a free, travel-sized styling spray and were entered in a sweepstakes to win a year's supply of the shampoo. The promotion generated 2 million referrals and made Physique the most successful new shampoo ever launched in the United States. To accomplish this P & G used __________.

People who referred 10 friends to the Procter & Gamble website for Physique shampoo (www.physique.com) received a free, travel-sized styling spray and were entered in a sweepstakes to win a year's supply of the shampoo. The promotion generated 2 million referrals and made Physique the most successful new shampoo ever launched in the United States. To accomplish this P & G used __________.



a) opt-out marketing

b) customerization

c) viral marketing

d) niche marketing

e) permission marketing



Answer: c


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