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Spamdexing involves a number of methods, such as repeating unrelated phrases, to manipulate the relevance or prominence of resources indexed by a search engine, in a manner inconsistent with the purpose of the indexing system. More at Wikipedia
Adversarial information retrieval - Adversarial information retrieval is a topic in information retrieval that addresses tasks such as gathering, indexing, filtering, retrieving and ranking information from collections wherein a s...
Parasite hosting - Parasite hosting is the process of hosting a site on someone else's server without their consent, generally for the purpose of search engine benefit.
TrustRank - TrustRank is a link analysis technique described in a paper by Stanford University and Yahoo! researchers for semi-automatically separating useful webpages from spam.
Index (search engine) — overview of search engine indexing technology
 
Found on Google search engine results
google.com/contact/spamreport.html - Similar Sites
 
Found on Yahoo! search engine results
help.yahoo.com/l/us/yahoo/search/spam_abuse.html - Similar Sites
 
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