Search engine optimization ( SEO ) is the process of improving the volume or quality of traffic to a web site from search engines via “natural” or un-paid (“organic” or “algorithmic”) search results as opposed to search engine marketing ( SEM ) which deals with paid inclusion. Typically, the earlier (or higher) a site appears in the search results list, the more visitors it will receive from the search engine . SEO may target different kinds of search , including image search , …

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