It has been listed at the top of Fortune magazine's Best Places to Work list. Today, Google controls between 50 and 70 percent of the world's search business market, and Brin and Page are among the wealthiest men alive.

Famous Saying: "If your business is based on a hot idea, go as goofy as you like with the name."

6. Mark Zuckerberg

Zuckerberg is the co-founder, chairman and chief executive of social networking site Facebook. The company began trading on the Nasdaq in May this year.

While in Harvard College, in his sophomore year, he wrote a program called Facemash as a "fun" project, letting students on the college's network vote on the attractiveness of other students' photos. It was shut down within days, but became a base for his writing Facebook, a program he launched from his dormitory room. With the help of friends, he took Facebook to other campuses nationwide and soon after moved to Palo Alto, California.