I see very low activity here, I don`t see any doc, and when you install it, the "LOCATION OF YUI LIBRARY" (in admin/settings/yui) points to a 404 error page. I tried to use the yui editor module, but can`t get it working too.
If it is the case, please advise on project page, so users don`t waste time trying it.

If someone can get it working (yui or yui+yui_editor), please tell me how.