By "iteration", do you mean that they might have fed a batch of new recently-collected data into the rankings calculations? Because some are hoping that Google will make some adjustments to the algorithm itself, which could shake things up just as much
I wasn't hit by Penguin, but I was hit by the last Panda refresh. My stats have been a little wonky today. I'll be way up one hour, back to normal for a few hours, then way up for another hour. It could be coincidental (it happens), or it could be that something is happening.
I'm seeing shifts several times a day, for me and for my competitors. Can't tell if it's different datacenters serving up different SERPs or what. I go up on one term, down on another, and then a few hours later it all switches up again. But the oddest part is that suddenly the amount of traffic I get from Google.com (not counting other Googles) is almost identical three days running. So the volume of search isn't shifting at all, but the terms bringing visitors to me are shifting all the time.
No evidence of any dramatic changes, good or bad. What is very odd, is that Google seems to have selectively removed certain keyphrases from our site (about half), while at the same time leaving very related terms in tact. I've tried to analyze the remaining vs. the removed and can find no rhyme or reason for their actions. I sent a re-inclusion request and they came back within a week saying 'no manual penalty', so that shines a tiny bit of light on the problem. I am actually fearing another iteration of Penguin because if it goes down like the first, we'll be wiped off the web.
One of my websites I haven't been working on for ages fell back a few pages from the first for its main search term these last few days. Could be Penguin ramping up or refreshing as it was hit by the first one.
[edited by: n00b1 at 8:35 am (utc) on May 25, 2012]
I would say that our 'penguin' sites recovered a few % around the 19th May while non-penguin sites fell a similar amount at the same time (no changes made - they are mostly old, small sites), but the variation after a few days is small enough that it could possibly just be seasonal variation.
It is also possible that the introduction of Knowledge Graph is distorting the figures for our (travel) sites that fell a small amount around the same time (or the sunny weather in the UK could have got people away from their computers...)
Personally, I'm seeing some dramatic shifts for some of the results I track. One site that appeared nuked by Penguin has returned. However a lot of utter junk is still there, including some hacked sites. Deeper in the results there is a very dramatic shift to junk urls with scraped postings.
I'd say an update rolled out affecting penguin. But I did say it before and was wrong then. Just like the first iteration (if in fact there has been a second) much of what I'm seeing is a surfacing of some junk tactics that really shouldn't work, but suddenly do.
our 'penguin' sites recovered a few % around the 19th May
For our site that was hit by Penguin, it was May 21st that we saw kind of recovery. Taking seasonality into account (using year over year data) we gained back about 40-50% of what we lost on April 24th.
Very few changes to our site... but we did chase down poor quality backlinks and request removal. That is something we would have simply ignored in the past.
We have not seen any recovery of the main terms we used to rank for pre-penguin.
Each day since Penguin, I've been looking at my search phrases for the day coming from Google. Until today, they've looked pretty familiar.
Then suddenly around 4pm Pacific today, they change. You almost wouldn't know it's the same site. And there's a theme to this new batch of keyphrases. They're very concentrated on just one category of my website - my most popular category which Google has pretty much ignored in the past, favoring my third most popular category for no apparent reason. This... could be a very good thing? OTOH, it's not like I'm ranking #1 for any of these new terms, LOL.
BTW, I filed a reinclusion request yesterday. I doubt that prompted today's shift, but I'm just mentioning it in case anyone else thinks it might be relevant.
I saw that just now on Twitter, less than one tenth? Let's hope it's a good weekend, our traffic is highly effected by US holidays, especially when people aren't at work to use the Bosses computer on Monday. It will be hard to see if anything in this refresh causes a genuine decrease unless it's violently dramatic.
Tedster: Traffic off about 50% from two weeks ago, not a seasonal issue. Yet for our top 500 product names, are position in the serps has hardly changed and conversions are within seasonal norms. I am starting to believe that G is simply sending better quality traffic, at least for our website.
No recovery on our UK site. After Penguin the number of sitelinks Google listed for our site went from 6 to 4. I got a reply to a re-inclusion request which said there was no manual penalty. About two weeks ago I added a Facebook plugin to our blog and the sitelinks went down to 2. I took the Facebook plugin off and site links went back to 4. Traffic still down 50% since Penguin. I have tweeked title tags on may pages to see if I have overdone them but still no change. It's anoying because sites that have replaced mine are no better. In fact most have weak content.
I'll keep reviewing the site for an obvious problems and see what happens but I think Google have overdone things.
lufc1955, same here. The sites that have replaced me are dire and spammers to boot. One site is all over everything and has obviously purchased links - one SERP he is #1 for is entirely powered by 1,000 + paid links to that page, a sitewide at that.
Planet13: We saw the same thing yesterday, mapped it against our last three Memorial Days, it definitely was not Memorial Day. Something is shifting, wondering if it is not some sort of traffic throttling again, our serps have hardly changed. Anyone else sense that?
Matt Cutts used the term "data refresh", which seems to imply that no changes were made to the Penguin part of the algorithm. So We need to see some reports from people who have made major changes to their site, and/or got rid of a lot of backlinks.