Cool new project – I think it might become very helpful one day. Documentation for a lot of open source projects is pretty bad and having to figure out a new contributing workflow every time just to hop in and help a bit is quite problematic. Hopefully, the unified interface SO users are used to will give docs writing a big boost.

That said, I still hope they output some sort of GitHub repo of all the accepted changes to make it a bit less walled-gardeny. A CC license is nice and all, but having the content in a repo as well would put my mind at ease.