Get Every 10th Burger King Purchase Free with Visa

https://www.visa-bkdeal.com/home.aspx

Register your Visa card and use it 10 times, and they'll credit you back the amount of the tenth purchase. No min. purchase required (buy something cheap the first 9 times, and expensive the 10th! hehe). Seriously, the 10th purchase will only be credited up to 7 bucks. Still...not bad if you eat BK a lot!