A Review of Jonah Berger's Book, Contagious
     Contagious  by Jonah Berger attempts to explain the science of why things go viral.    http://www.amazon.com/Contagious-Things-Catch-Jonah-Berger/dp/1451686579/ref=sr_1_1?s=books&ie=UTF8&qid=1453233688&sr=1-1&keywords=contagious      Berger's work takes up where Malcolm Gladwell's The Tipping Point  leaves off.   http://www.amazon.com/Tipping-Point-Little-Things-Difference/dp/0316346624/ref=sr_1_1?s=books&ie=UTF8&qid=1453233916&sr=1-1&keywords=tipping+point      Gladwell's book is an overview of how ideas and social behavior go viral, while Berger's work takes an in-depth look at the common characteristics of things that become contagious.  Gladwell's and Berger's books compliment each other, and provide helpful tips for getting a  product or idea to spread.      Contagious  outlines six principals that prompt people to share content, opinions and ideas.  They can be one or more phenomenon including  include social currency, ...