Guruh talabasi Nurshodbek Shokirov

Spamdexing[edit]

Spamdexing is the deliberate manipulation of search engine indexes. It uses a number of methods to manipulate the relevance or prominence of resources indexed in a manner unaligned with the intention of the indexing system. Spamdexing can be very distressing for users and problematic for search engines because the return contents of searches have poor precision.^{[citation needed]} This will eventually result in the search engine becoming unreliable and not dependable for the user. To tackle Spamdexing, search robot algorithms are made more complex and are changed almost every day to eliminate the problem.^[24]
It is a major problem for metasearch engines because it tampers with the Web crawler's indexing criteria, which are heavily relied upon to format ranking lists. Spamdexing manipulates the natural ranking system of a search engine, and places websites higher on the ranking list than they would naturally be placed.^[25] There are three primary methods used to achieve this:

Content spam[edit]

Content spam are the techniques that alter the logical view that a search engine has over the page's contents. Techniques include:

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  Keyword Stuffing - Calculated placements of keywords within a page to raise the keyword count, variety, and density of the page
  
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  Hidden/Invisible Text - Unrelated text disguised by making it the same color as the background, using a tiny font size, or hiding it within the HTML code
  
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  Meta-tag Stuffing - Repeating keywords in meta tags and/or using keywords unrelated to the site's content
  
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  Doorway Pages - Low quality webpages with little content, but relatable keywords or phrases
  
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  Scraper Sites - Programs that allow websites to copy content from other websites and create content for a website
  
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  Article Spinning - Rewriting existing articles as opposed to copying content from other sites
  
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  Machine Translation - Uses machine translation to rewrite content in several different languages, resulting in illegible text