I put up a sign in our office break room the other day because I am tired of the coffee vultures taking the last of the pot and not making more! Anyway... I printed the following in the most obnoxious font I could find: "If you aren't going to make coffee... DON'T DRINK COFFEE!!!" I was admiring my handiwork this morning and noticed I could have written: "If you're not going to make coffee... DON'T DRINK COFFEE!!!" Is one more correct than the other?