May 12
14
There are some reports of major shuffling going on in the Google search results as of yesterday. I believe from the reports that it may be a Penguin update – but I do not have confirmation from Google on this yet. There are WebmasterWorld threads and if you scan the Google Webmaster Help forums you will see tons of threads about ranking changes in the past 24 hours or so
Go here to see the original:
Google Penguin 1.1 Update Underway? Recoveries?