More than half of respondents to this week’s RBJ Daily Report Snap Poll say social media sites are not important to their work or professionally.

Only 15 percent say social media sites are a very important component to their work or professional life.

At 37 percent, LinkedIn topped the list of social media sites readers found most useful professionally. Facebook— which last week said it now has a half-billion members—was a distant second, with 11 percent, and Twitter was picked by 5 percent.

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