Cool. I have a question in my mind that you might answer or comment on. As the social networks and internet usage grow steadily, should we expect a decrease in average path length of a social network? Will "six degrees of seperation" be updated to "X degrees of seperation" in the future where X<6?
G'day, I am one of the others who worked on this.
Study back in 2011 showed that in Facebook at least, the average degrees of separation was 3.74 (and closer to 2 or 3 for regional connections) ... so as we enter a more digitally connected world, Stanley Milgram's "Smallworld" study (that gave us the original 6 DoS metric) is contracting.