Ключевые слова: best, bright, bubble, business, cheerful, choice, choose, client, concept, creativity, customer, emoticon, emotion, employee, evaluation, examining, excellent, face, feedback, good, happiness, harmony, heart, icon, joy, marketing, modern, mood, negative, opinion, positive, quality, questionnaire, ranking, rating, research, review, sadness, satisfaction, serious, service, showing, sign, smile, solution, strategy, success, survey, symbol, touch,