Those of you who are still on the fence whether to join twitter or not here’s the bump… Oprah has joined up and already has well over 1 million followers. Adage.com talks about the Oprah factor and it’s a pretty good read. Is Oprah the most powerful woman in the world?

Considering her ability to mobilize the masses — most recently, of course, inspiring The Great Grilled-Chicken Coupon Panic of 2009 at KFCs across the land — it’s a little scary to ponder how she might choose to deploy her rising social-media power.

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