FREE (and Cheap) General Mills Cereal at Target

I was perusing A Full Cup this morning, and saw a post about how to get free cereal at Target using Walgreen's ad to price match, target store coupons and manufacturer coupons. Hello Perfect Storm!Here's the low down: Walgreens Ad has General Mills Cereals (11.5 to 14 oz) on sale for $1.99/box (limit 4)Take the Wag's Ad to Target's Customer Service and let them know you need the price