Pay-per-click (PPC)

Pay-per-click (PPC) is an online advertising model in which an advertiser pays a publisher every time an advertisement link is “clicked” on. Alternatively, PPC is known as the cost-per-click (CPC) model. The pay-per-click model is offered primarily by search engines (e.g., Google) and social networks (e.g., Facebook).

EXAMPLE:

        a production possibilities curve compares two different products. Let’s imagine that the two products are cars and houses. If the economy produces more cars, then there are fewer houses produced. The decrease in houses produced is the opportunity cost of producing cars