Ok, so I am thinking of jailbreaking my phone mainly for the reason of being able to tether to my laptop. I currently have a legal version of netshare on my iphone (yes I was lucky enough to get it before it got banned), but I can't get it to work with windows vista, and I guess niether can anyone else. So my options are get a mac, get xp on the laptop and hope it works, or jailbreak my iphone. I have read a lot about jailbreaking but so far none of the posts I've read have answered the questions I have, so here are my questions. 1) If I jailbreak my phone does it still sync with itunes and my music/movie library? I do have an always expanding library because I use itunes a lot. 2) Can i still install and use apps I have purchased through the app store and itunes? 3) Will I still be able to purchase music through itunes on the iphone? 4) Can I still sync with mobile me? 5) For someone like me who hasn't jailbroken their phone and feels completely content using it locked down as is, but would rather be able to tether, is it worth it, and is there any disadvantages?