I am a terrible speller as well. I just take that extra bit of time to correct things with that squiggly line under them. Technology allows me to hide my horrible spelling ability very easily. So it is not so much that potential candidates are bad at spelling (particularly since I am too) but more that they just didn't take the time to do it right. I think resumes are still pretty important documents. Maybe not as important as a patent application or the actual code being written. But if they didn't take the time to do the resume right... what else are they going to overlook when it is important? Just my feelings.

And like I said, sometimes the second string does end up having the one. But if I already found the one in the first stack, then I'm still getting a great developer... just not the one with spelling mistakes. Plus, I'm not even a hiring manager. I review resumes of would-be peers.