Spamdexing or search engine spamming is the practice of deliberately creating web pages which will be indexed by search engines in order to increase the chance of a website or page being placed close to the beginning of search engine results, or to influence the category to which the page is assigned. Many designers of web pages try to get a good ranking in search engines and design their pages accordingly. The word is a portmanteau of spamming and indexing.

Spamdexing refers exclusively to practices that are dishonest and mislead search and indexing programs to give a page a ranking it does not deserve. "White hat" techniques for making a website indexable by search engines, without misleading the indexing process, are known as search engine optimization (SEO). SEO techniques do not involve deceit.

Search engine spammers, on the contrary, are generally aware that the content that they promote is not very useful or relevant to the ordinary internet surfer. Search engines use a variety of algorithms to determine relevancy ranking. Some of these include determining whether the search term appears in the META keywords tag, others whether the search term appears in the body text of a web page. A variety of techniques are used to spamdex (see below). Many search engines check for instances of spamdexing and will remove suspect pages from their indexes.

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学科WikiトップがついにWiki Spamにやられた
n_tom (nos) Fri, 20 Nov 2009 22:57:34 -0000
学科WikiトップがついにWiki Spamにやられた

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