ifixit tried to open up their iPhone delicately so they could pore through its entrails; PC World on the other hand seem to have modelled their playtime on the Inquisition, putting a poor, innocent Apple cellphone through a series of stress-test trials. They even caught the abuse on video, including determined scratching at the display with metal and dropping it multiple times onto concrete.
PC World's primary target was the 3.5-inch glass-fronted display, and given the generally delicate nature of touchscreens it's a reasonable expected weak-spot. However their attempts to scratch the glass with keys, keychains and more didn't marr it, and neither did a number of drops from anything up to six foot onto the floor.
A few gouges along the metal edges were the sum total of the iPhone's injuries, sustained when dropped from head-height onto the sidewalk, but otherwise the handset looked - and worked - normally:
"PC World's Conclusion: There's no need to coddle this sexy little device."
OMG, no phone (even the crappy moto razr) should ever have to go through what this poor iPhone went through. iPhone, thanks for taking one for the team!