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Social networks are online communities of like-minded users sharing common interests. They use these social sites for getting together to share and discuss their ideas and problems on subjects of their interest, values, visions, ideas, financial exchange, friendship, kinship, dislike, conflict or trade.
Social networks operate on many levels, from families up to the level of nations, and play a critical role in determining the way problems are solved, organizations are run, and the degree to which individuals succeed in achieving their goals.
Some of the commonly used social networks are Google, Facebook, LinkedIn, Technorati, MySpace, Yahoo!, YouTube and so on. The commonly used social tools include blogs, bookmarking sites, search engines, RSS feeds and so on. Nowadays business have started utilizing these free resources to market themselves and generate traffic to their websites.
