You can’t get much more severe than limiting coupons to one per customer, or offering printable coupons that expire a mere 24 hours after you print them. Procter & Gamble has led the way in creating coupons that can be frustratingly restrictive. But now the company is backing off, by making some of its coupons just a little more user-friendly.  Here’s the entire Coupons in the News article.