THISand it buggs the hell out of me cause I do it when I'm typing and when I'm texting. Also I'll type don't as dont' and the stupid spell check doesn't even notice on half my programs, especially at work.
Yes, It's from trying to type faster than I actually can, and end up mixing some letters up here and there. My middle finger is someties faster than my pointing finger. I noticed I say 'becasue' alot instead of because, suff like that, and shit
I have trouble spelling words I don't write too often, even if I use the word in my speech frequently.