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Jailbreaking allows you to customise your device considerably more than Apple allows you to by default. The customisation aspect of jailbreaking is what the majority of iPod Touch users want when jailbreaking their device.However, do note that jailbreaking your device will void your warranty. This means that should something go wrong with your device Apple will not fix or replace your device.
No it's quite safe to jailbreak the iPod touch and the iPhone. Jailbreaking is the process of opening up the iPhone or the iPod Touch up for installation of 3rd party applications. Following jailbreaking you can simply restore your device in iTunes at anytime to get it back to a factory state.
jailbreaking the ipod touch is legal. But if you use the tool that gives you all apps free it is illegal.
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...
You cannot get all apps for free without jailbreaking an iPod Touch. It is not possible.
No.
no
you cant
Yes, jailbreaking does void the warranty.
As of today (November 24th, 2010), jailbreaking an iPod Touch is not illegal. Is it 100% safe? No.
No, not without jailbreaking your iPod 2g.