Writing Companies For Coupons and Samples

Writing different manufacturers with a complaint or a compliment can result in several high dollar coupons and/or samples. I tend to write to manufacturers of products I frequently use to compliment them. I'm going to try to contact at least 10 different companies a week and see what happens. I've made a google spreadsheet so everyone can see what companies are receptive to sending coupons. The link for that is here.