Ключевые слова: abstract, acquire, acquiring, ad, advertiser, advertising, affiliate, automated, background, business, button, cash, click, concept, conceptual, content, cost, cpc, customers, engine, equipment, income, internet, key, keyboard, keypad, management, marketing, method, modern, net, network, notebook, online, pay, pc, per, ppc, result, revenue, sales, search, sign, success, system, tool, visitors, web, website, word,