Once in a month Google calculates the page rank of each page and changes the serp(search enigne result pages) for all keywords.

The Google Dance is called the time between the start and the end of an update. Normally the Google Dance took about 4 days.

The best time to put new pages online is during the Google-Dance. If you let too much time lapse between the completion of the update, and the publication of new content, you may reduce the amount of new content that will be included in the next update.

15th November 2003 would probably go down in search engine history as an important milestone. It is the day Google implemented sweeping updates in its algorithm, (nicknamed - Google ‘Florida’ algo update), which threw several thousand high-ranking sites off their ranks. The entire SEO community is exhibiting unprecedented nervousness, even rage. While the feelings are mixed in various camps, one thing is certain that Google has ruffled quite many feathers. Although Google usually updates its algorithm every alternate month or so (with minor updates even monthly), the magnitude of changes this time was more than what webmasters and SEO community expected. The new changes have off-listed several thousand high-profile commercial sites that enjoyed a continued ranking.

Lastly, we continue to note the high value of anchor text (text used to phrase a link). A tight focus on our target keyword phrases when links are directed to a page in the StepForth domain helps support strong rankings under those phrases.

What indicates an incoming Google Update

• The Google-Cache of many websites switches to an older version.