Pay per click marketing (also known as search engine marketing) appears at the top and right side of a search engine results page. Search engine marketing services work by associating your ad with a keyword or phrase related to your product or service. Any time that keyword is used in a search, your PPC advertisement will be shown on the search results page. You only pay for PPC advertising when a customer actually clicks the link to visit your website. The cost charged for each click depends on popularity of the keyword, the search engine’s assessment of how descriptive the PPC ad and keyword are to your website, and how frequently your ad is clicked vs. your competitors’ ads. While PPC advertising shows up most often in search engine results, pay per click results may also appear on different advertising networks and various websites across the Internet.