16 November 2007- Google Owns a Search Engine Optimization Company
Google paid $3.1 billion for DoubleClick, Microsoft paid $6 billion for Aquantive, and Yahoo paid $680 million for the 80 percent of Right Media that it did not already own and another $300 million for BlueLithium.
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6 November 2007- Why your search engine rankings have dropped
1. Your website changes unintentionally.
2. The links to your website change
3. The websites of your competitors change.
4. Spam elements on your web pages
5. Spam elements on your web pages
6. Technical problems
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25 October 2007-A look into the purpose of Google's "PageRank update"
A lot of blogs have been talking about a PageRank update in progress, but if you look under the covers, it really looks like a manually applied update to a set of sites that are being punished. While the majority of these look like they have been selling links, some of the affected sites do not appear to be selling links.
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