Social metrics is a hot area of business, especially when it involves measuring social TV.
SocialGuide, a startup specializing in social TV metrics, was bought this week by TV and web ratings giant Nielsen in a joint venture with McKinsey & Company to be called NM Incite. SocialGuide was developed to measure the social impact of TV as viewers increasingly communicate via Twitter and other social media channels while watching shows.
Social Guide competes against similar services from companies such as Trendrr.TV and Bluefin Labs.
Social TV analytics are part of a broader trend of startups providing new apps for monitoring and measuring social media. Our guides explain more about these trends:

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