I love the latest craze from companies on Facebook - progressive coupons. The latest is from Laughing Cow. They are offering up a coupon for those that share a picture of yourself (or your child) with your lunch. Right now the coupon is at 50¢ and depending on the number of photos submitted it may be up to a $2 coupon.
Head over upload your photo and they will email your coupon once the promotion ends.