Jeff Bezos, the world's second-richest person, is asking the public for charitable ideas.
An hour later, the tweet has already received more than 2,700 comments, including pitches to fund women's health care and help military veterans repurpose their skills.
In comparison, several of Bezos' peers on the world's richest list have gained significant notoriety for their charity work.
Microsoft co-founder Bill Gates, the world's richest person, and his wife started the Bill and Melinda Gates Foundation; Warren Buffett, the world's fourth richest person, pledged most of his fortune to that foundation.
Meanwhile, Facebook CEO Mark Zuckerberg, the fifth-richest person, and his wife, Priscilla Chan, started the Chan Zuckerberg Initiative.