The code site that I'm working on is in fact primarily driven by a desire to fix the documentation problem.
My approach is to make documentation more wiki-like so that multiple people can easily contribute. I find examples particularly useful in documentation, so a "pastebin for examples" is another major part of my work.
I hope that this will turn out to be more useful than the traditional approach of embedding documentation in the program source because it will make it easier for other people to contribute to the documentation.
You beat me to the punch by 25 minutes. ^_^ My reply below (at http://arclanguage.org/edit?id=14084) covers the same sort of stuff as yours but in a longer and more scatterbrained way.
