I never really protected my iPod touch and just kept it with no other things in my pocket. Only when I was not using it, I put it in a smooth little bag to protect it. But apparently that is not a good idea, because there are more and more scratches on the display. Actually after about a year of use there are a lot of scratches. The only possible explanation for this is that the soft bag collects dust or grit and then during transportation the dust scratches the display. I just have never really seen any grit or sand. Does anyone have similar experience?