tedster - 4:42 pm on Jan 15, 2009 (gmt 0)
Does anyone have a new insight into what the yo-yo is based on? This is not an easy one to gather data for, since the yo-yo can happen even within one day. I'm still leaning toward a sudden jump in search impressions. By that, I mean the unfiltered algo awards the url a large jump in ranking for a competitive keyword. But there's another factor involved, because not every rapid rise gets caught by yo-yo. Maybe it's a sudden growth in a certain type of backlink?