What: Chairman-CEO Where: Salesforce.com Inc., San Francisco Why: Benioff's company has moved far beyond its CRM roots to become a cloud-based force in sales support; sales-lead and database marketing (Data.com, formerly Jigsaw); internal social communications (Chatter, Rypple) and customer service (Desk.com). With its May acquisition of Buddy Media, Salesforce has become a major player in social media campaign management.

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