Date Added: Nov 2011
Social Network Sites are getting popularity among the people for its attractive features like, Friends and Groups. It provides a platform for the users to establish a link and communicate without much cost. There is no much restrictions imposed to form a group and become a member of a group. The network itself is in social in nature, there is no restriction about the topics discussed. This make the people be a member in more than one group. By the nature of the group it can be visible outside as well as the messages posted also visible or invisible in nature.