Watching his employees use a new social technology, Marc Benioff, the CEO of Salesforce.com, had an epiphany. His company had developed Chatter, a Facebook inspired application for companies that allows users to keep track of their colleagues and customers and share information and ideas. The employees had been trying it out internally, not just within their own work groups but across the entire organization. As Benioff read the Chatter posts, he realized that many of the people who had critical customer knowledge and were adding the most value were not even known to the management team.

A version of this article appeared in the July–August 2011 issue of Harvard Business Review.