Free/Non-Profit Hosting Providers?

Caspian asks: "I run a non-profit Web/shell/e-mail/MU* hosting service called The Web Union, or TWU for short. I've run this service for two years now, and it's been non-profit for quite a large percentage of that time. We all know the occasional hacker/geek who'll give a few friends accounts on her/his machine, but I'm wondering how many people are doing what I'm doing, and actually attempting to run a full-scale, full-service, "professional"-quality hosting provider for The Masses on a non-profit basis?"