Reviewer is marketing by customer reviews. Most people always look for a review before deciding to buy a certain product. If many people review that certain product, customers will want to buy and try it. Nowadays, people are getting bored of advertising. Promoting a brand or product through reviews is easier for people to conform than with direct advertising. In addition to increasing sales for the brand, it will also make the brand more recognizable. 리뷰어는 고객 리뷰에 의한 마케팅입니다.