A relatively new development is the use of social media marketing. eMarketer estimates that social-media marketing will account for 10% or $ billion, in online advertising spending. Social media marketing is a broad category of advertising spending, including advertising using social networks, virtual worlds, user-generated product reviews, blogger endorsements, RSS feeds of content and social news sites, podcasts, games, and consumer generated advertising. Why use social media marketing? Social media marketing offers these primary benefits: It can encourage interaction between consumers and brands. It can enhance perceptions of the “brand as person,” thereby strengthening a brand’s personality,.