Sorry to hear that happened SageAndScribe.  For the record we've had very few reports here in the forum of the screen lifting issues that apparently have occurred to some Nexus 7s and yours is the first I've heard of actually 'cracking'.    Generally most have found their tablets to be well made.  Did you notice any screen lifting or separation issue before the crack or just after?  Was it noticeable from outside the unit or only 'through the glass' of the screen?

Well, consider yourself as having heard another report.  Mine cracked yesterday, didn't drop it or anything, dropped in side "cargo" pocket of my pants on my drive to work, when I arrived it had a spiderweb crack emanating from the middle of the left/bottom (long) side.  There might have been a little stress on it from pressing against my leg when sitting in my car seat, but not much -- the pants leg ispretty baggy.  The touchscreen is compeltley unresponsive now.  In the last few days before the crack, I was also getting increasingly annoyed that it seemed to be "dropping" things more frequently as I dragged them across the screen; in hindsight I now wonder if this is related. I was not aware & never checked for the "raised glass on the middle of the left side" that I now see so many have encountered, and some have attributed their cracks to.

The more I read, the more I think this common flaw in the glass on the middle of the left side is a serious design issue, a ticking time bomb.