Remember the trivia game “Six Degrees of Kevin Bacon”? The idea behind that game is that through “friends of friends” connections, we are all only six people away from any other single person on the planet. More recent studies have found that number might be a bit high. It’s probably more like 4.4 to 4.6 – depending on who’s counting.


People who work in social media, social marketers, and developers of social platforms need to understand how scale-free networks work. It was responsible for much of the early thinking behind social media. The three (3) books below will each teach you the same core concepts (more or less), so pick only one. Any will do, because they each do a great job at discussing how scale-free networks work.





Understanding scale-free networks help us to predict future events, spread of diseases and ideas, and the way products or services are adopted by consumers. Below is an interesting video with some of the authors above mentioned.