0771名無しさん@英語勉強中 (ワッチョイ 2e81-5G4M)垢版2018/06/14(木) 11:15:56.44ID:IA4JnJbr0>>768 This must be the strategy by the drink maker using SNS & TV media. The people uses SNS frequently, and if one product is recommended from 'friend', they will try to buy the product. When this phenomenon has spread, the product becomes popularity.