Zuckerberg gets hitched

Facebook founder and CEO Mark Zuckerberg and Priscilla Chan at their wedding ceremony in Palo Alto, Calif. The ceremony took place in Zuckerberg's backyard before fewer than 100 guests, who all thought they were there to celebrate Chan's graduation. (AP Photo/Facebook, Allyson Magda Photography)

Facebook founder and CEO Mark Zuckerberg and Priscilla Chan at their wedding ceremony in Palo Alto, Calif. The ceremony took place in Zuckerberg's backyard before fewer than 100 guests, who all thought they were there to celebrate Chan's graduation. (AP Photo/Facebook, Allyson Magda Photography)

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1/6 Facebook founder and CEO Mark Zuckerberg and Priscilla Chan at their wedding ceremony in Palo Alto, Calif. The ceremony took place in Zuckerberg's backyard before fewer than 100 guests, who all thought they were there to celebrate Chan's graduation. (AP Photo/Facebook, Allyson Magda Photography)

Mark Zuckerberg, President and CEO of Facebook, walks to morning sessions with his girlfriend Priscilla Chan during the 2011 Allen and Co Sun Valley Conference, in Sun Valley, Idaho. (AP Photo/Julie Jacobson, Files)

2/6 Mark Zuckerberg, President and CEO of Facebook, walks to morning sessions with his girlfriend Priscilla Chan during the 2011 Allen and Co Sun Valley Conference, in Sun Valley, Idaho. (AP Photo/Julie Jacobson, Files)

Facebook founder Mark Zuckerberg and his long time girlfriend Priscilla Chan tied the knot at a small ceremony in Palo Alto. (AP Photo/Nasdaq via Facebook, Zef Nikolla)

3/6 Facebook founder Mark Zuckerberg and his long time girlfriend Priscilla Chan tied the knot at a small ceremony in Palo Alto. (AP Photo/Nasdaq via Facebook, Zef Nikolla)

Facebook CEO Mark Zuckerberg and his girlfriend Priscilla Chan walk near Fuxing Road in Shanghai. Zuckerberg wed longtime girlfriend Chan announcing the nuptials through a status update on the social networking site. REUTERS/Stringer, Files

4/6 Facebook CEO Mark Zuckerberg and his girlfriend Priscilla Chan walk near Fuxing Road in Shanghai. Zuckerberg wed longtime girlfriend Chan announcing the nuptials through a status update on the social networking site. REUTERS/Stringer, Files

Facebook co-founder and CEO Mark Zuckerberg and Priscilla Chan are seen in this screengrab of a wedding photo posted on Zuckerberg's Facebook page. Zuckerberg wed longtime girlfriend Chan, announcing the nuptials through a status update on the social networking site. REUTERS

5/6 Facebook co-founder and CEO Mark Zuckerberg and Priscilla Chan are seen in this screengrab of a wedding photo posted on Zuckerberg's Facebook page. Zuckerberg wed longtime girlfriend Chan, announcing the nuptials through a status update on the social networking site. REUTERS

Facebook co-founder and CEO Mark Zuckerberg and Priscilla Chan are seen in this screengrab of a wedding photo posted on Zuckerberg's Facebook. Zuckerberg wed longtime girlfriend Chan, announcing the nuptials through a status update on the social networking site. REUTERS

6/6 Facebook co-founder and CEO Mark Zuckerberg and Priscilla Chan are seen in this screengrab of a wedding photo posted on Zuckerberg's Facebook. Zuckerberg wed longtime girlfriend Chan, announcing the nuptials through a status update on the social networking site. REUTERS