The Google Dance refers to how years ago, a change to Google’s ranking algorithm often began showing up slowly across data centers, as they reflected different results, a sign of coming changes. These days Google’s data centers are typically always showing small changes and differences, but the differences between this data center and this one seem to be more like the extremes of the past Google Dances.
So either Google is preparing for a massive update or just messing around with our heads. As of now, these results have not yet moved over to the main Google.com results.
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