The book explores the complex social phenomenon of popularity and viral spread of information. The author asks himself why some names, ideas, products and people become extremely popular, while others go unnoticed. It examines whether word-of-mouth marketing is as effective as it is described, or whether there are certain patterns to creating the popularity or contagiousness of an idea, product, or opinion.

The book will be useful for a wide range of readers, as well as for specialists in the field of marketing and advertising, researchers of the phenomenon of popularity.

"Contagious" reveals the secrets of viral content and helps to understand the phenomenon of viral information dissemination. The author provides a practical popularity formula that helps make any product or idea contagious. This book will help readers understand the psychological mechanisms of perception and learn why some ideas or products go viral and others do not.

About the author:

Joni Berger is a business expert and professor at the Wharton School of Business at the University of Pennsylvania. He has spent more than 15 years researching viral marketing and social influence, as well as consulting CEOs of leading Fortune 500 companies.