You can read about them all here: http://givingpledge.org/
Organisations focused on the people in need, but operated by people with money have been too much under the spotlight, allowing many to give hardly anything yet enough to set up a photo op. The point of the Giving Pledge is to focus on how much someone can give without harming a reasonable lifestyle.
Gates is STILL the richest man in the world. He didnt get that way by participating in the http://givingpledge.org/, which is years old now.
This is just a laughable straw man. And you bothered to create a new account just to repeat it?
He got that way despite participating in the Giving Plesge. If he hadn't been giving away his money, he'd have more than $100 billion by now.
Gates is a eugenist IMO like his dad. If he wanted to give away his money right now. Not make a fake .org site for good will.