Below is a two part video of the opening keynote panel at BlogWorldExpo in New York City with Gary Vaynerchuk, Jeffrey Hayzlett and H.P. Mallory. The discussion? Social Media Game Changers: how social media is changing the roles and rules for sales, customer service, product development and marketing. How social media is propelling leading companies and radically changing the face of industries. More in their chat below:

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