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If you ultra paranoid that you will do unrecoverable damage, no. Otherwise go for it. I've seen some the most impressive backgrounds & icopn sets on jb'd itouches and iPhones. I'm jealous. When i can get a new mobo for my iPhone and finally get my phone working again, I'm jailbreaking it.
 
jailbreaking advice

from my experience of the term "jailbreaking" its not the best thing here, if you plan to jailbreak backup your ipod and use either greenpoison or snowbreeze
 
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