Ключевые слова: background, best, block, business, choose, client, concept, cube, customer, emoticon, emotion, evaluation, experience, face, feedback, good, happiness, happy, icon, marketing, mood, negative, opinion, people, poll, positive, quality, questionnaire, rank, ranking, rating, reputation, research, result, review, sad, satisfaction, service, smile, social, success, survey, symbol, thought, unhappy, user, vote, wood, wooden,