So I got the phone intending to get a skin for the back and leave the front. I got it last week and, like I do with any phone I have, I have a dedicated pocket for the phone. Nothing else goes in the pocket. For my Nexus One and my Palm Pre, I never got a skin and followed this procedure forever. Never had a problem. With the iPhone, I noticed that there were a couple small scratches on the back already! Maybe it's just bad luck, but it seems to be that th eback glass is pretty weak. The scratches are minor and can probably be polished out, but it's annoying. No scratches whatsoever on the front. So I went and got a skin from Best Buy. Luckily the skin was super easy to install. I always dread putting on skins because there is always a curve to the phone so you have to hold the side of the skin while it dries around the phone's curve. Clearly this isn't an issue with the iphone because it's flat. But hopefully this serves as a warning to those of you without any protection on the back: GET A SKIN!!