21 Richest Billionaires In The World

7. Mark Zuckerberg

Facebook CEO Mark Zuckerberg talks about the new Facebook email service at an announcement in San Francisco, Monday, Nov. 15, 2010. AP Photo/Paul Sakuma)
Ben Margot/AP

Rating: $35.3 Billion

Probably the most famous billionaire in the world, Zuckerberg became a global house-hold name thanks to the launch of Facebook.

He's also pledged to help bring the internet to those in the world who can't now afford it through Internet.org.

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WhatCulture's former COO, veteran writer and editor.