jailbreaking in reference to Apple iDevices refers to the installing of softwares foreign of Apple Certificates that allow for installation of 3rd party packages and softwares with no limitations or barriers. So it allows you to install apps made by developers that may or may not be found on the Apple App Store in theory.
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.
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.
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.
you cant
No.
no
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.
no, but i woudnt try it