Jailbreaking iTouch

[hazardCORE]

For Christmas I got the new 16 GB iTouch version 2.2
I haven't tried to jailbreak it yet because I heard it messes with the warranty (another friend told me you can just restore factory settings if you need to send it in).Also a friend told me that 16 GB ones are a lot slower when you jailbreak them.

I want to know all the positive things about Jailbreaking the iTouch and also all the dangers and negative things about it.
You can also just send me a link that has all the info if you have it.

[MISFlT]

there is already a thread about this, but im not a dick so ill answer

size shouldnt really matter about the speed but the pro is that you can get FREE apps, ones that are really useful, you can get like an NES emulator, and shit, i dont think u can really brick ur ipod, not much negatives really, but heres the thing, you have the 2g right? those cant be jb;ed yet