I just read that (btw the link isn't correctly linking in your article) but it wasn't clear to me whether you have used that code and "hacked the core" - did you hack the core?
Also how are the other functions that are added to TinyMCE handled - for instance inserting a link to another ss page?
btw I am intrested in this, but without hacking the core and providing all TinyMCE functions, until then I'll stick to bbcode only and a text edit