The terms Google bomb and Googlewashing refer to the practice of causing a web site to rank highly in web search engine results for unrelated or off-topic search terms by linking heavily. In contrast, search engine optimization (SEO) is the practice of improving the search engine listings of web pages for relevant search terms.
Google bombing is related to spamdexing, the practice of deliberately modifying HTML to increase the chance of their website being placed close to the beginning of search engine results, or to influence the category to which the page is assigned in a misleading or dishonest manner.
The term Googlewashing was coined by Andrew Orlowski in 2003 to describe the use of media manipulation to change the perception of a term, or push out competition from search engine results pages (SERPs).
Google bombs date back as far as 1999, when a search for "more evil than Satan himself" resulted in the Microsoft homepage as the top result.
In September 2000 the first Google bomb with a verifiable creator was created by Hugedisk Men's Magazine, a now-defunct online humor magazine, when it linked the text "dumb motherfucker" to a site selling George W. Bush-related merchandise. Hugedisk had also unsuccessfully attempted to Google bomb an equally derogatory term to bring up an Al Gore-related site. After a fair amount of publicity the George W. Bush-related merchandise site retained lawyers and sent a cease-and-desist letter to Hugedisk, thereby ending the Google bomb.
Adam Mathes is credited with coining the term "Google bombing" when he mentioned it in an April 6, 2001 article in the online magazine uber.nu. In the article Mathes details his connection of the search term "talentless hack" to the website of his friend Andy Pressman by recruiting fellow webloggers to link to his friend's page with the desired term.