What would happen if 당신 see a word spelled incorrectly?

I would ignore it, because like 90% of America is illiterate anyway and I don't have enough energy to correct every spelling 또는 grammatical error I come across.

Well if its an accident...I wouldn't do anything...but if they're doing it to piss me off...then someone will probably end up bleeding 또는 crying

I always correct if at all possible. Like in school, I was working with a group on a 구글 doc and someone was horrible at spelling and I kept going directly behind their cursor and corrected them as they typed.:D

Sometimes I correct it, sometimes I don't ... It depends what kind of mood i'm in >o>

I really don't care. I make mistakes all the time.

Nothing at all. There were so many times when people on this site (back when I first joined) would yell at me and make me feel like crap for spelling errors. I have grown to hate the people known as 'grammar/spelling Nazis' for that reason.