TIL the Diffusion of Innovation theory first came about in 1962, 20 years before people heard of the internet, by Everett Rogers, a communication theorist and socialist expert.

Diffusion is the process by which (1) an innovation (2) is communicated through certain channels (3) over time (4) among the members of a social system.
or in simple terms, how to make an innovation go viral.

The more recent books that advances this concepts of making something go viral are :
1. Crossing the Chasm - Marketing and selling disruptive products to mainstream customers by Geoffrey Moore
2. The Tipping Point - How little things can make big difference by Malcolm Gladwell
3. Contagious - Why things catch on by Jonah Bergers
4. Made to Stick: Why some ideas survive and others die by Chip and Dan Heath
I had no idea this concept was over 60 years old. Its information like this that always reminds me of how little I know about the world to begin with.