meh, my iPod is scratched all to hell, at least on the screen. surprisingly, the back only has a few scratches. i do use a case, but i made a mistake and bought the one made by apple. DO NOT BUY THIS CASE. it sucks as it doesn't have protection for the iPod on the sides, and i think some of my scratches were actually caused by the case because it is a pretty tight fit and i slide it in and out often. also, i found that when i would take it to work (i worked a construction job) debris would fall into my pocket and in between the iPod and the case, so when i slid it out, whatever had fallen into the case scratched the iPod.
that being said i really don't care that its scratched as when i buy things i use them without worrying about breaking them, however, next iPod i buy will be accompained with a more decent case.