Hi Garrett - I was just reading about you. When Kurt Olsen mentioned he liked TechHui because it had "lemurs and Lisi" the gears in my head slowly turned and I realized it was you.
We love the idea of open source physics you espouse. If you would like to try Confluence (an industrial strength wiki) for Deferential Geometry, we may be able to secure a free copy. Its the most feature rich and flexible Wiki we've tried, and we've tried quite a few. I'm sure jsMath could be incorporated via a plugin.