Ключевые слова: angry, best, black, business, choice, client, consumer, correct, customer, emotion, evaluation, experience, feedback, good, grade, hand, happy, information, internet, making, man, online, opinion, people, performance, poll, poor, positive, quality, rank, rate, rating, reaction, result, review, sad, satisfaction, score, service, sign, smartphone, social, star, suit, support, survey concept, technology, vote,