Google Dance
It's the period when Google is rebuilding its rankings, and results fluctuate widely for a 3 to 5 day period....

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

Google PageRank
PageRank is Google’s measure of importance assigned to a web page on a scale of 1 to 10....

Google SandBox Effect
The Google Sandbox theory, or Sandbox effect as it has become known in the SEO world, is a dampening filter....