Ключевые слова: advertisement, advertiser, advertising, affiliate, affiliation, analysis, background, business, chart, client, communication, concept, consumer, content, data, feedback, friend, graph, identity, internet, list, marker, market, marketing, media, note, notebook, page, paper, plan, planning, program, recommendation, refer, reference, referral, referrals, sales, schedule, search, sheet, social, strategy, suggestion, system, target, text, website, word, www,