Just thought I would point out a few wikis for other languages:
Tcl - http://mini.net/tcl/
- this one has over 1000 pages
Common Lisp - http://www.cliki.net/index
PHP - http://www.php.net/manual/en/
- not sure what to call this but users can add comments to
end of each page.
Lua - http://lua-users.org/wiki/