The must-read summary of Jonah Berger's book: "Contagious: Why Things Catch On". This complete summary of the ideas from Jonah Berger's book "Contagious: Why Things Catch On" reveals the six key principles that make a product or an idea contagious. As well as sharing stories of real-life companies from his extensive research, the author provides a set of specialised techniques that you can use to spread information and get your message...