Congrats to Facebook mogul Mark Zuckerberg and his lovely bride Dr. Priscilla Chan, his long time girlfriend. Just one day after Facebook went public with its record-setting stock offering (making Zuckerberg a billionaire 19 times over), and shortly after Chan graduated from med school, the two wed yesterday in a small private ceremony at his home in Palo Alto, CA. They announced the marriage on Facebook, of course.