I'm here to just throw my hat into the ring that I, too, have been experiencing daily, numerous, almost constant Safari crashes. I began to experience them after upgrading my old ipad2 to ios7. I have since upgraded to ipad Air (16gb wifi) and since day 1 (I purchased mine from Best Buy on launch day), I have experienced the random crashing. This happens on all sorts of websites; newspaper websites, forums, sites with embedded YouTube video or comment sections, you name it. It happens regardless of the number of tabs I have open. It happens regardless of the amount of free memory I have on my device.
I have NOT yet attempted a system restore to see if it resolves the issue, although I am skeptical as it has been happening since the day I purchased it.
I'm glad I live in Austin, TX and have access to an Apple store.
I hope Apple is listening. Steve is turning in his grave...