How the power players do it - by Fortune senior editor at large Patricia Sellers

Will the next Facebook be founded by a woman?

October 4, 2011: 1:31 PM ET

There is no shortage of female entrepreneurs. But where are the women who think really, really big?

FORTUNE -- Ever wonder why there 's no female Mark Zuckerberg? It is, after all, the era of the social web. Women use social-networking sites more than men do. Women stay on social sites longer. Women provide the bulk of the revenue at Zuckerberg's Facebook and gaming company Zynga, and most other fast-growing startups in the consumer Internet space.

So while Oprah and Martha (Stewart) have created major businesses around their divine selves, why has no woman built a business on the Zuckerberg scale?

Sheryl Sandberg, who is Facebook's COO, says one reason is that women who are great negotiators for other people -- doing a business deal, for instance -- "are often not good negotiators for their own advancement." Adds Demet Mutlu, the founder and CEO of Trendyol in Turkey: "A lot of women just don't go for it. We're afraid of what society thinks of us." To build a Facebook-level company, you have to go for it.

10 most powerful women entrepreneurs

Also, women tend to think about power horizontally -- they focus on being influencers -- while men care more about climbing the ladder. The folks at American Express (AXP) and Ernst & Young who sell services to entrepreneurs say that men tend to launch businesses to make money, while women create the companies they want to work for. With kids at home, their dreams usually aren't Fortune 500 size.

"Maybe for females it's more zero-sum," says Hearsay Social founder Clara Shih. "To stick with it for a long haul means that you give up family or being attractive to guys." Shih, however, tackled that challenge: She got married Oct. 1.

Most Powerful Women in Business

There are no excuses for women, says Gina Bianchini, just because they are not engineers or computer science nerds. Bianchini, who co-founded Ning, is now launching Mightybell, another social platform on the web. Looking at the backgrounds of today's top entrepreneurs, she found that most have nontechnical degrees. Zynga founder Mark Pincus majored in economics; Groupon's Andrew Mason was a music major. Bianchini, a Stanford grad, majored in political science. "It taught me how people organize," she says, noting that that is a valuable skill in the social Internet era. (Read more from Bianchi.)

Meanwhile, the Silicon Valley establishment is looking to help women advance. Venture capitalist Juliet de Baubigny, a partner at Kleiner Perkins Caufield & Byers, says that her firm is starting a KP Tech Fellows program to identify 40 promising student entrepreneurs -- two each at 20 universities -- and help them pursue their startup dreams. Women are a key target. Predicts De Baubigny: "We're on the cusp of seeing the female Mark Zuckerberg explode onto the scene."

This article is from the October 17, 2011 issue of Fortune.

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About This Author
Pattie Sellers
Pattie Sellers
Senior Editor at Large, Fortune
Executive Director of MPW/Live Content, Time Inc.

Pattie Sellers has written more than 20 Fortune cover stories including "Marissa Mayer: Ready to Rumble at Yahoo," "Muhtar Kent's New Coke," "Oprah's Next Act", "The $100 Billion Woman" (Melinda Gates), and "Gone with the Wind" (Ted Turner). She co-founded Fortune Most Powerful Women and oversees the Fortune MPW Summit, the preeminent gathering of women leaders in business and beyond—and programs such as Fortune MPW Entrepreneurs and the Fortune-U.S. State Department Global Women Leaders Mentoring Partnership. Pattie also develops Live Content across Time Inc. Her blog, Postcards, is about how power players lead and navigate their careers. Pattie won Time Inc.'s prestigious MVP award for her performance in 2012.

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