Chicago Tribune: Despite all the electronic ways to use coupons, shoppers — even younger ones seemingly addicted to their smartphones and everything digital — still value the redeeming qualities of a clipped paper coupon. “Americans tend to be creatures of habit, and we’ve been clipping coupons from the Sunday paper or taking coupons from the mail for decades,” said Matt Schulz, CreditCards.com senior industry analyst. “Those habits are pretty ingrained.”