They're two different things, people. :\ I'm kinda sick of people going around with insanely terrible grammar.. Saying stuff like:
your so stupit taht u shuld be band
It kills brain cells. I'm not saying that it's a major issue, just, a small peeve I have ._.
Your: Possessive form of the pronoun which can replace the subject of a sentence. (you posessive)
You're: Contraction between the words you and are. You're can name state of being, such as: "You're nice"
Guys, c'mon :\