True, but that doesn't help the folks at Blizzard - what are they going to do, ban everyone who's bought a Sony CD?
Anyway, just thought it was fun to see what sorts of things this little proggy was turning into a vector for. Aside from some sloppiness in the implementation, it's kind of a clever idea, in a perversely evil sort of way ;)
Regarding the WoW folks using it to hide things, I would imagine or hope that a patch could come out to test for it. I'm not into the gaming scene so I'm not sure how it would be enforced. Folks who cheat on such things are pretty low IMO. They probably cheat in solitaire too.