Amazon.com Inc's billionaire founder Jeff Bezos on Thursday turned to an unusual source of inspiration for how to donate part of his wealth: Twitter.

"I want much of my philanthropic activity to be helping people in the here and now — short term — at the intersection of urgent need and lasting impact," Bezos, one of the world's richest people with a net worth of more than $76 billion, said in a Twitter post.

"If you have ideas, just reply to this tweet with the idea (and if you think this approach is wrong, would love to hear that too.)"