TECH
12/03/2010 05:12 am ET | Updated May 25, 2011

Sheryl Sandberg, Mark Zuckerberg's 'Most Valuable Friend'

If all of that sounds a bit touchy-feely, well, it is. Ms. Sandberg, a well-regarded Internet executive, is known for her interpersonal skills as much as for her sharp intellect. And her regular meetings with the famously introverted Mr. Zuckerberg have helped to keep one of Silicon Valley's most unusual business partnerships working wonders for Facebook.

Read more on nytimes.com