blackra1n, absinthe
No but you can jailbreak an iphone or ipod touch but they each have different sites to jailbreak your ipod/iphone
Yes. On your iPod 4g, go on Safari and search for Jailbreak sites.
download them from loads of sites as usual, you dont need to jailbreak just to get free music
No, most jailbreak tools are free, however most good apps even on jailbreak app sites cost money. You can't use iTunes gift cards on these, but you can on the app store.
Some is and some is not.
There are many different sites for jailbreak, but not all of them are reliable... My advice is http://justunlock.me. Become a member and you'll get all necessary software and illustrated instructions as well.
You do not Jailbreak iTunes; you jailbreak iPods and iPhones.
its not 100% safe and still has a chance of breaking. Remember if you do jailbreak you itouch and it breaks your warrantee will cancel out and you wont be able to buy i new one unless you buy a new one. And you can jailbreak your itouch from either jailbreakme.com on your itouch or ziphone.org on your PC
You jailbreak the firmware.
Yes you can. There are a number of sites that will walk you through it and offer different tools. Be very careful in doing this. You could damage your Kindle if you do it incorrectly.
Yes you can. there is a new jailbreak out called "spirit". Google it "spirit jailbreak"
Updating the iPod Touch software erases the jailbreak. You can update, but it will erase your jailbreak.