I'm open to correction from the MODs but I don't think you can ST2B. The Wiki is an entirely different piece of programming from the main site and certainly, when I've tried it all it shows is the basic colons, semi-colons etc that you've typed.
Don't see any smilies on any of the other entries either.
stabby: try in HERE. It's the help page from the MediaWiki Handbook. I believe 60' is absolutely correct but you might find some other useful stuff in there for your ARRSEPedia experiments. And if nothing else it will keep you out of our hair for a while. (Oh look, a smiley )