There’s a great post in The Economist about Social Networks that has a nice little review of the Dunbar Number. The Dunbar Number is a number that social network theorists have been tossing around for a long time that refers to the maximum number of people that an individual can maintain (meaning: interact with at a regular enough interval to maintain a stable relationship) at a given time in his or her social network.  It is commonly believed to around 150. It appears over and over again in social network research. Continue reading →