The present age is the age of science.science has influenced every walk of life.Today we can not live even for a while without the use of one or the other of it's inventions.Its latest boon to mankind is social networking services.These services are internet or mobile-device based social spaces designed to pacilitate communication,build and represent their social networks online.they may let us add anyone in the network as our friend or contact,or they might ask both parties to agree all connections.
At present social networking services includes Facebook, twitter, LinkedIn, Myspace and many others.Among them, Facebook is the largest and the most popular social network with over one billion users.These web-based social networking services make it possible to connect people who share interests and activities across political, economic,and geographic borders.They help people to follow breaking news, contribute to online debates or learn from others.They are transforming online user behaviour in terms of users initial entry point, search,browsing and purchasing behaviour.In this way they expand relationship among world people constantly.people now exchange ideas and massages like next door neighbours.previously to communicate in this way was possible.so,at present a felling and sense of unity is being created in the whole world especially among people of same mentality and attitude.
Social network services have made this expansion or relation among world people possible because most of the social networking services and cost free or cost the users very little.Moreover ,these services allow their users to upload pictures, multimedia contents and modify the profile.Besides, to protect user privacy, social networks typically have controls that allow users to choose who can view their profile, contact them and them to their list of contacts and so on.These advantages make the users relation close.
In fact, the use of social networking services such as Facebook,twitter LinkedIn,Myspace and many other have become an integral part of the cevelized world.Due to social networking services we have become the barrier of time and distance in creating and expending relation among world people.
