As this story notes — along with just about every other one mentioning Jeff Bezos and his wealth — the Amazon founder is one of the top billionaires who has neglected to sign the Giving Pledge, in which the world’s wealthiest people commit to giving their majority of their money to charity. The New York Times needled Bezos in the spring about his philanthropy plans, and he turned to Twitter for inspiration.
Update: Gates returned to his throne a few hours later.
“Amazon’s Jeff Bezos beat out Bill Gates to become the world’s richest man Thursday.”