What Sparked Ackman's Crusade Against Herbalife?

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Jan. 7 (Bloomberg) -- Bill Ackman’s quest to expose Herbalife started with a tip from a friend. The call came from a reporter turned stock researcher, who had penned a book about the hedge fund manager’s last big short and was now telling him that Herbalife smelled like a pyramid scheme. Bloomberg's Duane Stanford reports on Bloomberg Television's "Market Makers." (Source: Bloomberg)