Intel, Microsoft, and Matsushita also declared it illegal to partition your drive to have an EXT3 partition for Linux, since EXT3 is a modification to run unsanctioned operating systems on computers.
att doesnt really care i think because im sure all of us have unlimited data. may not use all the talk minutes but go data insane with downloading jailbreak apps and what have you. apple of course doesnt like it because they cant make money off of it. in my opinion what is funny wasnt apple suppose to be the cool hip corporation?? you know always open for fun stuff but turn around and block the coolest apps you can put on your iphone i.e. categories.
I JB'd my phone to theme it, remove Apple's "DRM" & to poke around the phone.
Cracked apps? I consider these "try before you buy" apps. I've actually spent a fair amount of money on apps that I want to keep using after trying the cracked version.
The rest, I've just deleted & never used them again.
They're basically wanted to get rid of the security holes to make the device more secure, for example if there was a hole in your house so anyone could get in you would want to fix the hole.