10 of 50
10. Carol Bartz
President and CEO
Yahoo (YHOO)
2009 rank: 8
Age: 62

A year and a half into her tenure, this candid leader is accused of lacking a vision for Yahoo. Despite partnerships with Nokia and Microsoft, investors aren't impressed: The stock is down 15% this year.

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Last updated September 30 2010: 2:47 PM ET
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