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In a continuing string of new hires, 451 Marketing continues to make additions to address growing demand for PR agencies with Social Media savvy.

Todd Van Hoosear recently announced in his blog that he's left Topaz Partners to begin a role as senior analyst and director of client services at SocialSphere Strategies, a Boston

Boston new-media communications firm 451 Marketing has set an ambitious goal of more than doubling their operation by the end of 2009. Two recent line-up changes suggest that 451 is