Risks of Friendships on Social Networks
  In this paper, we explore the risks of friends in social networks caused by their friendship patterns, by using real life social network data and starting from a previously defined risk model. Particularly, we observe that risks of friendships can be mined by analyzing users' attitude towards friends of friends. This allows us to give new insights into friendship and risk dynamics on social networks. 
Cuneyt Gurcan Akcora, Barbara Carminati, Elena Ferrari
cs.SI physics.soc-ph