Is Google's Yo-Yo Effect the Evidence of a New Algo ?

11/10/2008 I decided to write this post because starting from April '08 to today, there have been more and more frequent cases of yo-yoing SERPs. But it's not the first evidence of Google's yo-yo on a big scale. Here in Italy Michele De Capitani realized and studied Google's yo-yo effect from 2007 and called it "sine waves". In 3 articles Michele explains very well how he discovered this destructive effect by monitoring different Google data centers for different websites.