no they cannot. They can only void your warranty for opening the system, but the physical unit is yours. They will only ban you for copyright infringement.
No, but it will void your warranty. Any operational problems you will have (and you will certainly be increasing their likelyhood) may give Apple the right to refuse warranty service on your iPad.
It is not illegal but will invalidate any warranty.
No, jailbreaking isn't illegal. However it will void your warranty.
It is not illegal in the US, but it does invalidate your warranty.
Yes it is illegal as you are downloading copyrighted material
It is illegal to do so and will void your warranty.
Yes, any illegal alteration of the OS voids the warranty this is true I work for apple.
Not illegal, but unlocking the phone by jailbreaking voids your warranty with Apple and may get you in trouble with your carrier.
it's legal but you will lose your warranty
No you might void a warranty but not for the replacement or upgrade of the HDD
There are many blogs which tell you how to get free Microsoft points. No, this is not illegal as you are will be entering and filling in surveys.
Not at all, is it not illegal to reprogram or even remove a rev limiter, however it may affect your warranty etc.