https://www.reuters.com/article/us-usa-holiday-shopping-mastercard/record-online-sales-give-short-u-s-holiday-shopping-season-a-boost-report-idUSKBN1YT0PQ >U.S. shoppers spent more online than in retail stores during the shortest winter shopping season in the past six years, with online sales hitting a record high, a report by Mastercard Inc showed.