Possible Free Hamburger from Champps?

So, I'm not for sure how long these will be available, but if you become a fan of Champps on Facebook, they say that you'll be emailed a coupon for a free hamburger (supposedly no purchase necessary to redeem it, either). Anyways, we gave it a shot! In case you are interested, the link is HERE. I've only been there once (Was that the last World Cup?! No... Manchester was playing one of the games...), but it was yummy!