Would it be tenable to moderate such a post to filter out not-significant-enough projects and scammers?
My thinking is to give wealthy benefactors a way to see what interesting projects are looking for funding. It would be mostly projects that don't fit, or aren't getting enough donations, from traditional funding sources such as being a charity or getting government grants.
Here's my project: jawhealth.org
It's a campaign to raise awareness of the so-called jaw epidemic, which is a global health issue that's been highlighted and thoroughly described by researchers at Stanford (among many others) but is currently being ignored by the mainstream for various reasons, and people are suffering as a result.