http://www.sitepronews.com By Sophie White August 24, 2007
There is a current and active way to knock a website out of Google's search engine results. It's simple and effective. This information is already in the public domain and the more people that know about it, the more likelihood there is that Google will do something about it. This article will tell you how it works, how to get a website knocked out of the search engine rankings, but most importantly, how to defend your own website from having it happen to you.
To understand this exploit, you must first understand about Google's Duplicate Content filter. It's simply described thus: Google doesn't want you to search for "blue widget" and have the top 10 search terms returned copies of the same article on how great blue widgets are. They want to give you ONE copy of the Great Blue Widget article, and 9 other different results, just on the off chance that you've already read that article and the other results are actually what you wanted.
To handle this, every time Google spiders and indexes a page, it checks it to see if it's already got a page that is predominantly the same, a duplicate page if you will. Exactly how Google works this out, nobody knows exactly, but it is going to be a combination of some or all of: page text length, page title, headings, keyword densities, checking exactly copy sentence fragments etc. As a result of this duplicate content filter, a whole industry has grown up around trying to get round the filter. Just search for "spin article".
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