A fluctuation in the Google rankings as a result of an algorithmic update. www.headland.co.uk/pages/glossary
Yep, perhaps if you try out a "dance tool" you will understand what it means very quickly: http://www.google-dance-tool.com/ changes, fluctuation, bouncing.. it's been happening a lot in the past three or four months.
During a Google update, the SERPs returned by Googles various datacenters are different, some showing the new SERPS and some showing the old ones. The SERP placement of a site will change from minute to minute and this is referred to as Google dance.
i have used this too in all three windows it is showing same result.then how do i judge who are my competitors ?
Google used to rebuild its rankings, and as a result of this rebuilding, rankings of Web sites on Google's SERP may fluctuate in order during a several day period. The "Google Dance" would happen anywhere up to 36 times per year .
One day you are in #1 position and then next day you are in position 9, this is normal when you have been building backlinks aggressively and an indication to slow down, but dont stop.
When Google update its index, the website Ranking in search engines and Page rank affects. It is called Google Dance. It happens 4 times a year.
During a Google update, the SERPs returned by Googles various datacenters are different, some showing the new SERPS and some showing the old ones. The SERP placement of a site will change from minute to minute and this is referred to as Google dance.