There's a small hurdle in front of those of us who want to extend our reach using services like Facebook and Twitter - the dreaded corporate policy:

According to a study commissioned by Robert Half Technology, an IT staffing company, 54 percent of U.S. companies say they've banned workers from using social networking sites like Twitter, Facebook, LinkedIn and MySpace, while on the job. The study, released today, also found that 19 percent of companies allow social networking use only for business purposes, while 16 percent allow limited personal use.

Yet another reason to maintain your brand on your own site. Social media is great for echoing and amplifying, but you really need your own soapbox as a starting point.

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