In today's Internet, social networking sites have established themselves as one of the most popular online activities.This popularity compares well with information search and email.
Names that were absolutely unknown just some years back such as Orkut, Myspace and Yahoo!360 have become household names now. The impact of these sites can be well understood by the ever-increasing number of people joining these networks across all age groups and regions around the world.
Primarily, we can identify a social networking site on the basis of some basic characteristics, which include:
a. Members are able to create a profile of themselves, assigning various levels of viewability to it, such as totally public, restricted-public, or totally private.
b. Members can maintain a list of their friends who are either previously existing upon the network, or can be invited to join the network by them.
c. Members are able to view the friends' lists lying within their friends' profiles too, enabling them to access the profiles of more and more members of the network matching their interests and tastes.