Head over to the Diet Coke Facebook page and “Give a Friend a Boost“. Choose up to 5 friends and let them know why they are extraordinary.  Each person will then receive an email with a coupon for $1/1 Diet Coke 14 oz., 16 oz. or 20 oz. product.
If you want a coupon for yourself… be sure and tell your friends to head over to the Facebook page and “give you a boost” 🙂
Thanks to Cuckoo For Coupon Deals