With the development of computer sc

With the development of computer science and the Internet technology, social networking services (SNS) have come to be a widely popular platform to build social networks or social relations among people in recent years. SNS are web-based services that allow individuals to create a public profile, create a list of users with whom to share connection, and view and cross the connections within the system. Social networking sites are varied and they incorporate new information and communication tools, allowing users to share ideas, pictures, posts, activities, events, interests with people in their network. SNS have affected the social life and activity of people in various ways. With its availability on many mobile devices, a social networking service allows the users to continuously stay in touch with friends, relatives and other acquaintances wherever they are in the world, as long as there is access to the Internet. A social networking service can also unite people with common interests and beliefs through groups and other pages, and has been known to reunite lost family members and friends because of the widespread reach of its network