joost - 8:11 pm on Dec 19, 2010 (gmt 0)

My blue-widgets.com site that virtually disappeared from Google rankings about 2 years ago was back on front page for "blue widgets" yesterday and the day before. And gone again today. I never found out why it had disappeared, but now assumed a penalty had been lifted. However, because it's gone again today, yesterday's may have been an old data set? Or is today's an old set and yesterday's the new data set that is settling in?