Very nice. It's good to see a lot of rich folks, both young and old (Buffet, Bloomberg, Gates) donating their money. When you're young it's all about accumulating as much money as you can from others in the form of businesses. Then as you get old, you start asking yourself what good all that money is when you're going to rot away in the ground like everyone else. After you win "the game" and enjoy the prize, you might as well disperse it. No use holding onto green paper if it doesn't change the world or make it better. At least Mark, at his young age, will get to see his donation actually used over the next few decades.