I cannot post how to jailbreak your iPod Touch/ iPhone on here
Edit: It is not illegal, Apple cant have you arrested because you violated their terms and conditions. The worse case scenario is if it breaks while jailbroken, your warrenty does not cover it. To undo the jailbreak, restore it, then your warrenty is restored as well.
obviously, as you cannot get them w/o jailbreaking
Yes, jailbreaking does void the warranty.
"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.
Yes; not jailbreaking it. If you mean a way to do the same thing as jailbreaking without actually doing so, there is no current way to do so.
Jailbreaking a phone is partially legal and partially illegal. I have a post regarding this http://www.techlucid.com/2013/11/is-jailbreaking-illegal-or-not/
It is impossible to get an installer on an iPod Touch without jailbreaking.
It is up to you. No matter what you have on your ipod will become messed up when Jailbreaking...
By jailbreaking it.
No
no, it is not illegal
no
As of today (November 24th, 2010), jailbreaking an iPod Touch is not illegal. Is it 100% safe? No.