Ключевые слова: african, app, cellphone, city, content, device, diverse, diversity, ethnicity, friend, friends, friendship, fun, generation, group, happy, hipster, joyful, laughing, lifestyle, male, man, media, mobile, mobile phone, multicultural, multiracial, online, people, phone, sharing, sitting, smart, smartphone, smiling, social, street, student, team, technology, teenage, telephone, together, trendy, urban, using, watching, woman, youth,