Your/you're

Robin found this one in Little Rock. The your/you're mistake is one of my personal pet peeves! If you mean YOU ARE, use YOU'RE. The shirt reads, "If your scared, say your scared." It should read, "If you're scared, say you're scared." Yes, after considering that this made it to a shirt to be worn again and again, I am scared.

Evidently, basic grammar know-how is not necessary in order to develop applications for Facebook. Maybe my students are correct when they say they don't "need this stuff." **sigh** The word "your" shows, or is supposed to show, possession or ownership. The word "you're" means "you are." If a writer can substitute "you are" whenever there arises a your/you're question, then "you're" is correct. In this case, the writer should have chosen "you're."
I took the Real Age Quiz, and supposedly my real age is 23. Does that mean that I am immature? Don't answer that.