A social network is a platform that focuses on building and reflecting of social networks or social relations among people, e.g., who share interests and/or activities. A social network service essentially consists of a representation of each user (often a profile), his/her social links, and a variety of additional services.
Human beings are social animals .Every humans have to develop social network for surviving their life in this world . It's essential & Important part of life. More social network means most successful Human being. ----------------------------------------------------------------------------------------------------------------------------- sumitgupta008
You can also use these social networks to promote your site. Creating a good profile and interacting with other user to get their trust so that if ever you post some updates about your site the people that you are connected with will also spread about it. But it also depends on what you have posted or shared to them. Give them reasons to help you in promoting your post.
Social networking is the modern big exapantion in the world of Internet Marketing, and with good incentive. buy now it is such a big and most important part of the Internet culture. at this time to stay and should be not notice by marketers, or without aout anybody, at their risk.it is very good for business to publish your business in social networking sites.