What quirk(s) do you have?

I hate it when people use "ur", "u", "y", "r" (the list is endless, I could go on forever)... when writing something. Even if it's via text or on the internet, it still really bugs me! I also get really worked up when people get "your" and "you're" mixed up or don't even bother trying to get it right. Man, that makes me sound so lame.