Does Spelling Matter? I think it does.
I actually appreciate it when folks email me to let me know about a comma fault or incorrect use of an apostrophe. I tend to screw up a lot and Craig Andera always drops me a note. He went to a better college than I. Er, me?
Hopefully folks don't think TOO poorly of me when I misspell words. Of course, I think horribly of YOU when YOU misspell.
The real question is, how concerned should I be when my very expensive Lenovo ThinkPad T60p is about to have
it's its ;) BIOS flashed by a Utility that's spelled (spelt?) itself "Utiltiy".
Seriously, I think that the more folks use your product, the more effort you should put into Spell Check. Don't let the programmer check his or her own work. Get an editor. Someone with a B.A. in English.