Google Algo Change Causes Some Major Drops
Posted by nullbit on October 17, 2005, 7:10 pm
Brian Turner notes what appears to be significant algo changes at Google beginning from yesterday, leaving some SEO'd sites badly affected.
There's widespread speculation as to what is behind the changes - main theories at present are:
- Data loss at Google causes an incomplete index - suggestions of Googlebot panic spidering to rebuild it
- Semantic processing of links that mean established and varied links are weighted more, giving more power to internal links and less weight to link development work
- New filter for site-wide links
- Increased weighting of authorities to reduce presence of less established sites even further, to limit spam
- Google is evil, blah blah blah
Some heavy discussion at WMW tries to understand the changes.
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