http://www.steaz.com/promotion/FreeZeroCalorie/index.html -here's a pdf of the coupon in case they take it down. They say it's available at whole foods and natural food stores
http://www.freestufftimes.com/wp-content/uploads/2009/10/Flash1.pdf
http://www.freestufftimes.com/wp-content/uploads/2009/10/Flash1.pdf