Reuters/Robert Galbraith
Facebook is currently trading at $55 per share, so Zuckerberg's gift is worth just under $1 billion.
The money will go toward Zuckerberg's foundation, the Silicon Valley Community Foundation and The Breakthrough Prize In Life Science, a Noble Prize-like award.
2013 was a year in which there was a serious backlash against the idealism of Silicon Valley.
And yesh, the industry does deserve some flack for talking about changing the world with iPhone games and photo-sharing apps. And sure, you can see why people in San Francisco might protest over Google buses using public bus stops. And sure, sometimes tech industry people say dumb, mean things about the homeless.
But when Mark Zuckerberg follows the lead of other tech giants, like Bill Gates, and makes massive charitable donations, it restores your faith in the industry's humans.