Quiz: 10 questions about Mark Zuckerberg on his 30th birthday

Facebook founder a billionaire, noted philanthropist

CBC News Last Updated: May 14, 2014

Facebook founder Mark Zuckerberg, estimated by Forbes to be worth $26.3 billion US, celebrates his 30th birthday today. The Harvard dropout earned his fortune in his 20s, like several other tech titans including Dell Inc.'s Michael Dell, Google's Larry Page and Sergey Brin, and Tumblr CEO David Karp.

Zuckerberg, whose early career was chronicled in the film The Social Network, spurred a massive shift in how we consume information and show ourselves to the world. Here are 10 questions about the enigmatic social media pioneer.