How Online Advertising Works

Although SEM refers to placing ads just on search engines, online advertising as a whole is much broader. The possibilities of online advertising include placing ads on nearly any type of website or page a user might browse, such as news, blogs, reviews, entertainment, online magazines, and marketplaces. In AdWords, these other sites make up the Google Content Network. Ads on the Google Content...
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Introduction to Search Engine Marketing and Online Advertising

A search engine helps users find the things they’re looking for online. The user types a word or phrase, called a query, into the search engine, which then displays a set of results that are relevant to the query. Most search engines provide two types of results listings in response to the same user query: organic (also called “natural” or “free”) listings, and paid...
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