While we're talking grammar, let's address the most common error I see on the board: your vs. you're.
You're is a contraction of 'you' and 'are'.
"You are cool" is the same as "You're cool."
Your is an adjective describing a possession.
"Your new speakers are amazing."
"I think your opinion is awful."
Please, please, please -- and I'm looking sternly at SirQuack when I say this -- never say "Your right" when you want to say you agree with someone. "You're right" is correct.
This is super simple. One is a contraction, the other is not.
