Introduction
Over the past decade the nature of the web, internet access, and other internet applications have become increasingly useful in the normal lives of human beings. Kedem argues that “The Internet creates new ways for citizens to communicate, congregate, and share information of a social nature. It is obvious that the Internet has and will continue to change the way we live” (2.math.umd.edu 2).
Notable in importance because of their popularity are social networks and social networking sites (SNSs). They are important also due to their effect on daily human activities. Facebook, Twitter, Flickr, MySpace, Blogs, LinkedIn, Wikis, and ...
