Ever since its evolution as a separate discipline, one of the most significant development in marketing is the use of social media in marketing. Commencing as a tool for connecting the people, social media has emerged as a most potent input for the marketers, helping them in every aspect of marketing. Social media has surpassed all models of growth and with over 1.5 billion subscribers of various social media platforms, presently it has engaged over a sixth of the entire humanity. The magnanimity of numbers makes it a very potent database, which can be used for a multitude of meaningful applications, including marketing. Social media is being used for identifying customer needs, communicating and engagement with customers and helping them in recognizing and recalling the brands, influencing their purchase decision making process and post-purchase satisfaction. Recognizing the potential of this most potent tool for augmenting the effectiveness of their marketing strategies, all types of firms including the small businesses, non-profit organizations and even political parties are using this for reaching out to their target audience.