No, you cant. You can only jailbreak I-Pod Touch and I-Phone and I-Pod Nano 1st generation!
Go to green poison or red poison there jailbreak sights
Yes. On your iPod 4g, go on Safari and search for Jailbreak sites.
Yes. It will cost less if you jailbreak it. Never do THAT on e-bay.
i dont know but u buy them ^^^ No you don't just go to jailbreakme.com Jailbreaking is a free service. If you have every had to pay for a jailbreak, you have been scammed.
Yes.
Cant, Just jailbreak. Nothing will be different but cydia will be installed.
5 mega pixels for the Ipod touch 4g.
yes so you can facetime
probably, why would you jailbreak it in the first place ? it isn't an iphone, so no need to do that .
not yet but there will be soon 5/10/10
If you have 3.1.2 firm ware: http://www.ithinkdiff.com/jailbreak-ipod-touch-os-3-1-2-with-blackra1n/