Ключевые слова: angry, assessment, attitude, business, choice, choose, client, consumer, control, correct, customer, design, emotion, evaluation, experiences, expression, face, feedback, giving, good, happiness, happy, level, like, management, mood, negative, opinion, performance, positive, quality, question, questionnaire, ranking, rate, rating, research, result, review, sad, satisfaction, service, strategy, support, survey, symbol, technology, unhappy, unlike, user,