A Google Dance is the term for when Google updates all of it search centres. It can take a few days and during that time, search results, and Google Page Rank can go hither and thither.

One of my websites personality tests had had a Google Page Rank of 5 until a week or two ago when it vanished. At the same time, my C, C++ and C# topic had dropped from 7 to 6. I held my breath (best advice under such circumstances- figuratively I mean, not physically!) and lo and behold, they’re back today.