Ключевые слова: advertisement, bonus, business, buy, card, cashback, client, collect, commerce, commercial, concept, consumerism, coupon, credit, customer, design, discount, earn, ecommerce, friend, gift, giving, hand, internet, loyal, loyalty, marketing, money, online, percentage, phone, plastic, point, points, privilege, program, promotion, purchase, refund, retail, returning, reward, rewarding, sales, save, service, shopping, smartphone, web,