Facebook co-founder Mark Zuckerberg made US$20 billion in the initial public offering of the social networking site on Friday to become the world's 29th richest man. Zuckerberg set up the website eight years ago when he was a sophomore at Harvard University. The day after the IPO, Zuckerberg made headlines again by marrying his girlfriend of nine years Priscilla Chan. The two tied the knot at a ceremony in the backyard of their home. What made the wedding grab more headlines than the Facebook IPO was how modest the ceremony was.

The 90 guests who were invited had no idea what they were about to witness. They all thought they were coming to a party to celebrate Chan's graduation last Monday from medical school at the University of California at San Francisco. It was only after the guests stepped into the Zuckerberg home that they were told about the wedding. Nobody had even prepared a wedding gift.

Zuckerberg did not present his bride with a huge diamond ring. He gave her a ruby ring that he designed himself. And the wedding banquet was food from a neighborhood restaurant the two like to frequent.

People probably thought that the world's 29th-richest man would get married in multi-million-dollar extravaganza aboard a luxury yacht, with guests drinking champagne that costs hundreds of dollars a bottle. But the Zuckerberg surprised everyone. Their wedding should make Korean couples think again about the lavish weddings they tend to favor, which sometimes bankrupt their parents.

After the wedding, Zuckerberg changed his Facebook status to "Married to Priscilla Chan," and in just seven hours, 580,000 users clicked the "Like" button to congratulate the couple on the humble ceremony. Zuckerberg has surprised the world again.