Hi, I'm just wondering.... I love playing touchgrind on my new ipod touch, for those who don't know it's a skateboarding game in which you put the touchscreen to A LOT of use by controlling a skateboard with your fingers... i'm just wondering can this possibly get to be unsafe for the touch screen, because of excessive use? how safe is it to play constantly this game for hours? i just feel like it's kinda agressive for my touchscreen when i get really into the game and i really don't wanna mess it up so tell me am i worrying for no reason? thnx everyone