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Search engines may penalize sites they discover using black hat methods, either by reducing their rankings or eliminating their listings from their databases altogether.
SEO techniques are classified by some into two broad categories: techniques that search engines recommend as part of good design and those techniques that search engines do not approve of and attempt to minimize the effect of, referred to as spamdexing.
Spamdexing involves a number of methods, such as repeating unrelated phrases, to manipulate the relevancy or prominence of resources indexed by a search engine Cheap Bill Russell Shirt , in a manner inconsistent with the purpose of the indexing system.
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 or URL of a web page. Learn more of this with the Search Engine Optimization Philippines.
Content spam techniques involve altering the logical view that a search engine has over the page's contents. They all aim at variants of the vector space model for information retrieval on text collections.
Keyword stuffing involves the calculated placement of keywords within a page to raise the keyword count, variety, and density of the page. This is useful to make a page appear to be relevant for a web crawler in a way that makes it more likely to be found.
Older versions of indexing programs simply counted how often a keyword appeared, and used that to determine relevance levels. Most modern search engines have the ability to analyze a page for keyword stuffing and determine whether the frequency is consistent with other sites created specifically to attract search engine traffic. More information about Keyword stuffing with the Search Engine Optimization Philippines.
Disguising keywords and phrases by making them the same color as the background Cheap Kyrie Irving Shirt , using a tiny font size, or hiding them within HTML code such as "no frame" sections, ALT attributes, zero-widthheight DIVs, and "no script" sections.