I recently got my first android phone, a Samsung galaxy gt i9003. I have a few questions about rooting the phone. 1. Is it worth rooting the phone? 2. I believe the warranty gets void when you root the phone, so is there a way to get back to factory settings even after rooting the device so that warranty stays. 3. I do not have a Internet on my Telephone and I am basically depending on the internet of my laptop. Then, I am using Connectify to create a wifi spot and accessing internet through my mobile. Even then, i can't access some of the sites, and some apps like Dropbox. I think using tethering after rooting the phone, I can use USB to connect to the Internet from my laptop. Is that correct? In that a case, will there be any performance lag or will it be the same speed as on my laptop? Thanks.