Ключевые слова: ad, advertisement, advertiser, advertising, affiliate, business, businessman, button, click, content, conversion, ctr, data, digital, ebusiness, ecommerce, emarketing, impression, internet, keyword, man, management, marketing, media, money, network, online, optimization, pay, payment, per, ppc, pressing, rate, referral, revenue, sale, search, seo, social, target, technology, through, traffic, viral, virtual, visitor, web, website,