Big Money in Going Viral?

Friday, 7 Jun 2013 | 12:00 AM ET

A new Cheerios ad attracted millions of YouTube views in just a few days. Why do some videos stick while others fall flat? "Contagious: Why Things Catch On" author and Wharton School Marketing Professor Jonah Berger explains the mystery behind viral videos and how businesses can capitalize on this new form of marketing.