THE RUNDOWN: An emerging resale market for daily deals lets consumers sell the coupons they no longer want from sites like Groupon and LivingSocial.
HOW IT WORKS: DealsGoRound.com and Lifesta.com don't charge sellers to list their unwanted coupons. But the sites take a small cut if the coupon is sold. Buyers aren't charged any fees.
THE MARKET: Daily deals have exploded in popularity in the past year. But an estimated 20 percent of the coupons go unused, according to Daily Deal Media.