Fold, a crypto payments startup that launched a portal for buying Domino's pizza using the Lightning Network, now offers cash-back rewards in bitcoin to shoppers who use the mobile app for purchases at Amazon, Uber, Starbucks, Burger King, REI, and Target, just to name a few. The in-browser app Lolli already offers this feature for desktop users, and is developing a mobile app of its own. Now with Fold entering the game, bitcoiners might benefit from competition between the shopping apps, CoinDesk's Leigh Cuen opines.