>he doesn't hesitate to get out his checkbook He bought Instagram for $1 billion. If I remember correctly, people thought he was crazy to pay that much. Then h

>he doesn't hesitate to get out his checkbook He bought Instagram for $1 billion. If I remember correctly, people thought he was crazy to pay that much. Then he bought WhatsApp. Facebook might be on the decline, but both of those two apps are still going strong