The three co-founders are among the youngest members to join the "Giving Pledge."
I hate to break it to you, but a $10 million donation to increase Harvard's endowment doesn't have nearly the same impact as a similar gift to an institution aimed at social betterment.
Many companies are making important contributions, but CEOs have less leeway than ever to make bold investments in their communities. Due to growing pressures from short-term shareholders and increasing regulations, companies have been severely constrained in making targeted, long-term investments that drive social change.
Mark Zuckerberg and his wife, Priscilla Chan, announced that they'll donate 99 percent of their Facebook stock to philanthropic causes over the course of their lifetimes. Terrible, huh?
If you had a billion dollars, would you give it all away? Warren Buffett and Bill and Melinda Gates did it and then asked others to do it.
Facebook Chief Operating Officer Sheryl Sandberg and her husband, Dave Goldberg, have pledged at least half of their $1 billion fortune to charity.