  Social networks have become a part in the daily life of millions of users,
which offer wide range of interests and practices. The main characteristic of
social networks is its ability to gather different individuals around a common
point of view or collective beliefs. Among the current social networking sites,
Facebook is the most popular, which has the highest number of users. However,
in Facebook, the existence of communities (groups)is a critical question; thus,
many researchers focus on potential communities by using techniques like data
mining and web mining. In this work, we present four approaches based on link
analysis techniques to detect prospective groups and their members
