I am always advice on down change in SERP that it might me Google Dance.. but now stuck in same problem.. a month ago I start working on SEO fresh website it was like on 7th page... I worked in white hat methods and it was on 11th rank till yesterday evening. Today when I checked ranking it is on 3 & 4th page.. I have done some spam yesterday to push the ranking from 11th to 1st page.. now I am Worried .. It is Google Dance?