Google bomb
From Wikipedia, the free encyclopedia.
A Google bomb or Google wash is a certain attempt to influence the ranking of a given page in results returned by the Google search engine. Due to the way that Google's PageRank algorithm works, a page will be ranked higher if the sites that link to that page all use consistent anchor text. A Google bomb is created if a large number of sites link to the page in this manner. Google bomb is used both as a verb and a noun.
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As an example of Google bombing, if a user registers many domains and all of them link to a main site with the text "... is a living legend" then searching for "living legend" on Google will return the main site higher in the ranking, even if the phrase "living legend" doesn't appear on the main site. A common means of exploiting this is through weblogs, where although the entry may disappear from the main page quickly, the short-term effects of a link can dramatically affect the ranking of a given site. Empirical results indicate that it does not take a large number of websites to achieve a Googlebomb. The effect has been achieved with only a handful of dedicated weblogs.
The above has to be qualified, however. A handful of blog links will not Google bomb someone like Amazon out of the top results for "books," for example. In fact, Googlebombs have generally had an impact on relatively "non-competitive" terms, where there's no particular page that seems to be necessarily the right answer.
The technique was first discussed on April 6, 2001 in an article by Adam Mathes <1>. In that article, he coined the term "Google bombing" and explained how he discovered that Google used the technique to calculate page rankings. He found that a search for "internet rockstar" returned the website of a Ben Brown as the first result, even though "internet rockstar" did not appear anywhere on Brown's webpage. He reasoned that Google's algorithm returned it as the first result because many fan sites that linked to Brown's website used that phrase on their own pages.
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Accomplished Googlebombs
Recent (as of 2005) and popular examples are:
More:
http://en.wikipedia.org/wiki/Google_bomb