What's the Best (and Worst) Ad Campaign on Twitter?

Nov. 11 (Bloomberg) -- Bloomberg deals reporter Cristina Alesci looks at the most effective Twitter ad campaigns and some that backfired as well. She speaks on Bloomberg Television’s “In The Loop.”
What You Need to Know: Markets Surge, Greece, China
23:02 - Bloomberg's Jonathan Ferro briefs you on the day's top stories.
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