Human beings by and large are social. They feel an inherent need to connect and expand their connections. There is a deep rooted need among humans to share. In the past, due to geographical distances and economic concerns, connections between people were limited. A social network is made up of individuals that are connected to one another by a particular type of interdependency. It could be ideas, values, trade, anything. Social networks operate on many levels. Initially social networking happened at family functions where all relative and friends would conglomerate under one roof. Social networking has always been prevalent; it is just that in these times the face of social networking has changed. Where earlier the process was long drawn, involving a chain movement where in one person led to another through a web of social contacts, today the process is highly specialized. Communication has been instrumental to a large extent to the growth of social networking. With the advent of Internet and the cell phone a lot of social interaction is captured through email and instant messaging. Today there are a lot of online social networking sites where individuals volunteer information about themselves and their social networks. Social networking allows for like- minded people to interact with another. An online social networking site is a place where a user can create a profile and build a personal network that connects the user to other users. What used to be just a niche activity has today taken the proportions of a global phenomenon that engages tens of millions of Internet users.
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