Ключевые слова: angry, attitude, bad, blocks, button, customer, emoji, emoticon, emotion, emotions, experience, expression, face, feedback, flat, good, green, happy, illustration, isolated, level, like, negative, neutral, opinion, poll, positive, quality, rating, reaction, review, sad, satisfaction, series, service, set, sign, smile, smiley, support, survey, symbol, thinking, unhappy, user, vote, web, yellow,