Check out bleacherreport.com. It's a lot like what I think you're describing, but for sports. People write original articles, other people can edit them, and everyone can vote. Writers who have gotten big on there have gotten contracts.

I'd love something like that for rationalism, and would write for it a bit. I'd even invest a small amount if you need. In fact, I'd be surprised if you wouldn't get into YC with that idea :)