i do not belive so
It is up to you. No matter what you have on your ipod will become messed up when Jailbreaking...
No, to jailbreak your iPod Touch, simply download the application you wish to use and follow the prompts on screen. Although it is suggested to maintain a backup, it is normally not necessary and the jailbreaking process is normally harmless to your phone. All user data is kept throughout the jailbreaking process.
"Jailbreaking" is another word hacking. Therefore you void your warranty but you get cydia, a jailbreaking software. Jailbreaking does have it advantages and Disadvantages. But if you want to send it to apple to repair it you have to restore it to factory settings to get back your warranty.
Of course, downloading the wrong things to it that aren't compatible or not understanding before jailbreaking can brick your iDevice. Hopefully DFU mode and restore can get it out.
NO, you can always restore your iDevice back to its original settings.
If you cannot restore it using iTunes restore function, you will have to bring it to an Apple store for service. If you bricked it by jailbreaking it, you will have to pay for the repair, even if it is under warranty.
Not at all! Even if you end up jacking up your phone you can always restore from iTunes!
Now you will not delete all your apps. If you restore your ipod it will delete all your apps but you can always re-download for free, even if it cost $ before. (Don't update if you have a jailbroken ipod)
no, to get a newer jailbreak you have to restore the ipod touch and then update the ipod touch and then download the jailbreak. that is a huge con for jailbreaking.
No, jailbroken iPhones are okay with SquareTrade, as long as they are not physically altered and can be reset with a software restore.
Yes, and it happens very often. Jailbreaking your iPod is very risky, because it can corrupt the software, but more importantly, ruin the hardware. If you are not sure what you are doing, then do not jailbreak your iPod.
Jailbreaking is fine, you can do a complete restore which will remove a jailbreak if you need to send it to apple. Don't worry. It's fine