Why do certain products and ideas go viral? Dynamic young Wharton professor Jonah Berger draws on his research to explain the six steps that make products or ideas contagious. Why do some products get more word of mouth than others? Why does some online content go viral? Word of mouth makes products, ideas, and behaviors catch on. It's more influential than advertising and far more effective. Can you create word of mouth for your product or idea? According to Berger, you can. Whether you operate .
