Google dance and Search engine placement

This was summer 2000 when google decide that we fill our database with the new data and this work they continue till summer 2003 what a long time period, in this the google makes update once in a months and this change is called google dance the google dance occurred over the course of 6 to 8 daybecause each data center in turn had to be taken out of rotation and loaded with an entirely new web index, and that took time and this google dance called Update Fritz in the summer 2003 and at the summer 2003 google switch to an index that was incrementally updated every day means more faster then the previous, Instead of a monolithic monthly events, the Google would refresh some of its index pretty every day, which generated much smaller day-to-day changes, so lots of people called everflux to this process. although, most SEOs talk about algorithm updates or data updates or refreshes. So most data refreshes are index updates, although occasionally a data refresh will happen outside of the day-to-day index updates. For example, updated backlinks and PageRanks are made visible every 3-4 months.This is the fastness of the google services that he provide updated results to the user and change the search engine placement of the various new and old websites.