Search Engine Marketing, or SEM, is the method of gaining traffic by purchasing ads on search engines. It is also called paid search and sometimes referred to as CPC (cost-per-click) or PPC (pay-per-click) marketing, because most search ads are sold on a CPC / PPC basis. Like Search Engine Optimization (SEO), it relies on keywords that activate your results into the paid advertising section of the search results page. http://youtube.com/watch?v=-cQxd1gS88s&app=desktop

SEO techniques can be classified into two broad categories: techniques that search engine companies recommend as part of good design ("white hat"), and those techniques of which search engines do not approve ("black hat"). The search engines attempt to minimize the effect of the latter, among them spamdexing. Industry commentators have classified these methods, and the practitioners who employ them, as either white hat SEO, or black hat SEO.[48] White hats tend to produce results that last a long time, whereas black hats anticipate that their sites may eventually be banned either temporarily or permanently once the search engines discover what they are doing.[49]
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