While I am aware that when Penguin 3.0 initially rolled out last weekend, Google's Pierre Far said that the roll out is far from complete, that it is still rolling out and will so for the "next few weeks." My site was slightly hit last weekend, I lost maybe 3-5 positions for most of my keywords, but not something that I couldn't recover from. Yesterday however, it seems like the pages that were ranking on the 1st pages of Google completely disappeared. They don't rank in the top 300 at all. I haven't done any link building since the update, haven't added any content... In other words, nothing has changed on my end. So it seems like there was some kind of a refresh/update rolling out yesterday. Can anyone confirm? Any ideas as to what algorithmic changes were implemented yesterday specifically?