I have thought about making a javascript port of your posting tool just to make it a bit more convenient to use, especially for people without a perl interpreter lying around. I actually implemented one once, but wasn't confident that it actually worked (I don't know javascript and I didn't have the time to cook up any particularly interesting tests). That may be the easiest way to go for helping people post code.
Alternately, if PFCs are hosted at Hulver's Site (and I have no objection to that) then having people upload code to their Files section seems a perfectly reasonable way to go.