“How are social networks formed? The basics of social network formation is based on three simple ideas: shared social foci, triadic closure, and homophily. The first two ideas help us understand where we get our friends. A shared social foci means simply that links are more likely to form among people who share a social focus (i.e., classmates, workmates, people who attend the same church, etc.), whereas triadic closure means that links are more likely to form among people who share friends. Homophily, on the other hand, attempts to explain the links that stick—it is the idea that links are more likely to form among people who have similar interests and characteristics.”