Google Nexus S ditches Gorilla Glass leaving screen vulnerable to scratches
Gorilla Glass is basically a thin layer of alkali-aluminosilicate glass that protects your phone from all kinds of damage. The Gingerbread-flavored phone might have gone without the rugged glass in a simple attempt to cut costs, but the more likely reason seems to be that the curved form of the glass presents an additional manufacturing problem. In any case, this is far from a deal-breaker for us, but rather a warning for those of you keeping your keys and cell phone in the same pocket.
source: Twitter via Geekword