I can't count how many SEOs whom optimize terms for Google continuously misspell terms for their clients. I am aware of misspelling techniques to capture portions of search share, but seriously, it's damaging my brain. Please use a dictionary or spell checker before you post. /Rant Off
I think it has to do with a phrase I heard one time..."specific intent". I have not practised it, nor will, since I pick up traffic from mispellings anyway.