Ключевые слова: background, best, business, businessman, client, concept, copy space, customer, economic, emoticon, emotion, employee, evaluation, experience, face, feedback, feeling, good, happy, icon, management, marketing, negative, online, opinion, poll, positive, product, quality, questionnaire, ranking, rate, rating, reduction, reputation, result, review, risk, satisfaction, score, service, sign, smile, star, success, survey, symbol, trust, up, user,