What is google pogo and dancing?
 

What is google pogo and dancing in SEO?

"pogo"? What do you mean?

There nothing as google pogo.
I think you are trying to ask about google penguin and google dance.
Google Penguin: It refers to a set of algorithm updates and data refreshes for the Google search engine that the company periodically initiates to help enhance the value of its search query results for users.
Google Dance: Google Dance is an out-dated slang term used to describe the period of time in which 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 several day periods.
Hope I was able to answer your question.