Ключевые слова: advert, advertisement, alert, business, businessman, client, communication, company, computer, conceptual, contact, customer, cut out, cyberspace, electronic, email, inbox, information, internet, invitation, laptop, letter, list, mail, mailing, marketing, message, mobile, network, newsletter, notification, offer, online, people, phone, promotion, reading, receive, sale, sell, send, sms, social, spam, technology, text, user, web, write,