Ключевые слова: appraisal, approval, background, buttons, cartoon, character, client, cyberspace, decision, design, down, emoticon, emotion, expression, face, feedback, feeling, flat, fun, good, hand, happiness, happy, icon, illustration, isolated, laugh, like, love, marketing, negative, network, nubes, positive, sad, set, signs, smile, smiley, smileys, social, survey, symbol, technology, thumb, up, vote, web, yellow,