A lot of people don't believe that glass screens scratch, that they're harder than steel, hard as diamond, etc etc. I've always known that to be false, considering my glass windshield is severely scratched up from the wipers going back and forth on it with grit and particles of dirt. Today I was at Walmart, and saw two iPhone 3GS display models. The glass screens on them were scratched way way worse than any plastic screen phone's I've seen, even the dummy plastic phone models. I was truly shocked at how worn away the sides of the screen were (they looked like they were sandblasted), and there were deep thin scratches everywhere on the screen. The iPhone was tethered to the display by a strong cable, so I don't think anyone could have thrown them around. If you ever don't believe glass screens scratch, go to a Walmart and look at their iPhone display models, LOL.