Hacks work on addresses, so when an update happens, an address changes.
SIMPLIFIED:
For this demonstration the plug in the wall = address, and the toaster = hacks.
Hell_Demon likes to plug his toaster into the wall to make himself some tasty toast.
[IMG]http://i659.photobucke*****m/albums/uu314/Roflolmao/hdstory1.png[/IMG]
After his return from his holidays, he found out that his plug changed!
[IMG]http://i659.photobucke*****m/albums/uu314/Roflolmao/hdstory2.png[/IMG]
So now he needs to get a new toaster.
THE END