44. Lorrie Norrington
Age: 50
Marketplaces, home of eBay's auction site, Shopping.com, and other sites, has struggled in recent years (revenues were down 5% in 2009), while PayPal has become eBay's cash cow. She's working to reignite the auction site with improved search capabilities for buyers and better terms for sellers, but her efforts have yet to turn the tide.
NEXT: Bonnie Hammer
Last updated September 30 2010: 2:47 PM ET
