nofollow is an HTML attribute value used to instruct search engines that a hyperlink should not influence the link target’s ranking in the search engine’s index. It is intended to reduce the effectiveness of certain types of spamdexing, thereby improving the quality of search engine results and preventing spamdexing from occurring in the first place. […]

[Read more →]

Mirror websites  Hosting of multiple websites all with conceptually similar content but using different URLs. Some search engines give a higher rank to results where the keyword searched for appears in the URL. URL redirection  Taking the user to another page without his or her intervention, e.g. using META refresh tags, Java, JavaScript or Server […]

[Read more →]

Link spam takes advantage of link-based ranking algorithms, such as Google’s PageRank algorithm, which gives a higher ranking to a website the more other highly ranked websites link to it. These techniques also aim at influencing other link-based ranking techniques such as the HITS algorithm. Link farms  Involves creating tightly-knit communities of pages referencing each […]

[Read more →]

Spamdexing is any of various methods to manipulate the relevancy or prominence of resources indexed by a search engine, usually in a manner inconsistent with the purpose of the indexing system. It is a form of search engine optimization. Search engines use a variety of algorithms to determine relevancy ranking. Some of these include determining […]

[Read more →]

Link doping refers to the practice and effects of embedding a large number of gratuitous hyperlinks on a website in exchange for return links. Mainly used when describing weblogs (or blogs), link doping usually implies that a person hyperlinks to sites he or she has never visited in return for a place on the website’s […]

[Read more →]