Six reasons why things catch on or become contagious?

A discussion based on a book called “Contagious” by Jonah Berger, published in 2013.

A quick summary of the topics covered in the book and what I will talk about:

1. Social currency - does it make me look good?
2. Triggers - how are you reminded of the product?
3. Emotion - strong emotions = sharing
4. Public - what is everyone else doing?
5. Practical value - is it actually helpful?
6. Stories - is my idea/ product a relevant part of a cool story?