[Four]

I'll sometimes type like that when I'm talking to a close friend.
It's never so terrible that they have trouble reading it however.
I usually will just type basic stuff such as "nvm = nevermind, txt, brb, lol," and other basic things like that.
Not like some other people " whoz be typng lik dis n sheet."
Depending how illiterate they are, the more I get fed up with it.