Probably won't be long before they find a way to patch it, if everything else's been patched and made useless.
Enjoy it while it lasts I guess.
EDIT: I bet they have a staff member watching these forums, due to the speed at which they patch the game to lock out these hacks.
EDIT 2: The boxes on this hack don't work very well on Windows 7 64-bit, they barely show up and only flicker at best.