It's hard to believe social TV has come so far so fast. Fifteen months ago, Lost Remote became the first industry site to focus on the intersection of social media and TV, and today a book about social TV hits store shelves. Authored by Hill Holliday's Mike Proulx and Stacey Shepatin, "Social TV" ($15.96 on Amazon) looks at how marketers "can reach and engage audiences by connecting television to the web, social media and mobile."

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