I'll support an effort like this as much as possible, short of actual programming...I've discussed my programming in the other thread hehehe...
I have a site that is currently hosting a Wiki that I was using to do my homebrew world...Kinda like Pyrandon's world Wiki.
If you guys wanna do a project like this, I'd recommend starting with a sub-forum for planning, then as the project starts to reach scale, move to a larger repository, such as a Wiki.