Ключевые слова: adult, adults only, advertisement, blackboard, blank, blue, casual clothing, caucasian ethnicity, cheerful, communication, concepts, confidence, connection, copy space, discussion, global communications, happiness, holding, human hand, ideas, information medium, internet, lifestyles, looking, males, men, message, mobile phone, one man only, one person, people, portrait, positive emotion, red, sign, single word, smart phone, smiling, social networking, speech, speech bubble, standing, studio shot, talking, technology, text, text messaging, wireless technology, young adult,