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[Rozwiązany] Google Algorithm Change History  

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2016 Updates

Unnamed Major Update — December 14, 2016

Multiple Google trackers showed massive flux around December 14-15, including a rare MozCast temperature of 109°F. Webmaster chatter was heavy as well, but Google did not confirm an update.

December 15th Google Search Algorithm Update Signals (SER)


Unnamed Major Update — November 10, 2016

MozCast detected a major (106°) spike on November 10th and another on the 18th. Industry chatter was high during both periods, with some suggesting that the second spike was a reversal of the first update. Google has not confirmed either event. Many people reported bad dates in SERPs during the same time period, but it's unclear whether this was causal or just a coincidence.

November 10, 2016 Google Algorithm Update – Was It A Core Ranking Update, The Mobile-first Index Being Tested, or Both? (GSQi)

Was There A Google Search Update On November 10th? (SER)


Penguin 4.0, Phase 2 — October 6, 2016

The second phase of Penguin 4.0 was the reversal of all previous Penguin penalties. This seemed to happen after the new code rolled out, and may have taken as long as two weeks. Post-Penguin activity had one final peak on October 6th (116°), but it is unclear whether this was Penguin or a new update. Algorithm temperatures finally started to drop after October 6th.


Penguin 4.0, Phase 1 — September 27, 2016

The first phase of Penguin 4.0, which probably launched around September 22-23, was the rollout of the new, "gentler" Penguin algorithm, which devalues bad links instead of penalizing sites. The exact timeline is unconfirmed, but we believe this rollout took at least a few days to fully update, and may have corresponded to an algorithm temperature spike (113°) on September 27th.

Why Didn't You Recover from Penguin? (Moz)


Penguin 4.0 Announcement — September 23, 2016

After almost two years of waiting, Google finally announced a major Penguin update. They suggested the new Penguin is now real-time and baked into the "core" algorithm. Initial impact assessments were small, but it was later revealed that the Penguin 4.0 rollout was unusually long and multi-phase (see September 27th and October 6th).

Penguin is now part of our core algorithm (Google)

Google updates Penguin, says it now runs in real time within the core search algorithm (SEL)


Image/Universal Drop — September 13, 2016

MozCast recorded a nearly-record 111° temperature and a 50% drop in SERPs with image (universal/vertical) results. The universal result shake-up opened up an organic position on page 1, causing substantial ranking shifts, but it's likely that this was part of a much larger update.

Penguin 4.0: Was It Worth the Wait? (Moz)




Unnamed Major Update — May 10, 2016

MozCast and other Google weather trackers showed a historically rare week-long pattern of algorithm activity, including a 97-degree spike. Google would not confirm this update, and no explanation is currently available.

Google Dismisses Any Recent Major Algorithm Update (SER)



 
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2017 Updates

Intrusive Interstitial Penalty — January 10, 2017

Google started rolling out a penalty to punish aggressive interstitials and pop-ups that might damage the mobile user experience. Google also provided a rare warning of this update five months in advance. MozCast showed high temperatures from January 10-11, but many SEOs reported minimal impact on sites that should have been affected.

Google warns it will crack down on “intrusive interstitials” in January (SEL)

Official: Google Intrusive Interstitials Mobile Penalty Now Rolling Out (SER)


Unnamed Major Update — February 1, 2017

There was a period of heavy algorithm flux starting around February 1st and peaking around February 6th. It is unclear whether this was multiple algorithm updates or a single update with an extended roll-out, but anecdotal evidence suggests at least two updates.

Unconfirmed Google algorithm update may be better at discounting links and spam (SEL)


Unnamed Major Update — February 6, 2017

Algorithm changes beginning on February 1st continued for a full week, peaking around February 6th (some reported the 7th). Webmaster chatter and industry case studies suggest these were separate events.

The February 7, 2017 Google Algorithm Update – Analysis and Findings From A Significant Core Ranking Update (GSQi)

February 7th Google Algorithm Update Was Big (SER)


"Fred" (Unconfirmed) — March 8, 2017

Google rolled out what appeared to be a major update, with reports of widespread impacts across the SEO community. Gary Illyes jokingly referred to is as "Fred", and the name stuck, but he later made it clear that this was not an official confirmation.

New, unconfirmed Google ranking update ‘Fred’ shakes the SEO world (SEL)

Did Google’s Fred update hit low-value content sites that focus on revenue, not users? (SEL)

 

 
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Google Tops 50% HTTPS  —  April 16, 2017

According to our MozCast 10K tracking set, half of page-1 Google organic results were secure/HTTPs as of mid-April. This increased to close to 75% by the end of 2017.

Unconfirmed

What should you do?

Even if Google doesn't turn up the reward or penalty for HTTPS, other changes are in play, such as Chrome warning visitors about non-secure pages when those pages collect sensitive data. As the adoption rate increases, you can expect pressure to switch to increase.

For new sites, I'd recommend jumping in as soon as possible. Security certificates are inexpensive these days (some are free), and the risks are low. For existing sites, it's a lot tougher. Any site-wide change carries risks, and there have certainly been a few horror stories this past year. At minimum, make sure to secure pages that collect sensitive information or process transactions, and keep your eyes open for more changes.

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Unnamed Update  —  May 17, 2017

MozCast and other tools tracked a massive, multi-day spike that kicked off around May 17th. This preceded a sustained period of high algorithmic flux that may not have settled down for months.

Unconfirmed

On Wednesday, some webmasters and SEOs began noticing the automated tracking tools from places like MozcastSER MetricsAlgorooAdvanced Web RankingsAccurankerRank Ranger and SEM Rush mostly begin to show significant signs of a large Google algorithm update. Well, what they technically track are changes in the positioning of rankings for the top X thousands of keywords they track. So either the UI changes, which many of these tools try to keep out of their tracking metrics OR the algorithm shifted a bunch of URLs around in the rankings.

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Google Jobs  —  June 20, 2017

Google officially launched their jobs portal, including a stand-alone 3-pack of job listings in search results. These results drew data from almost all of the major providers, including LinkedIn, Monster, Glassdoor, and CareerBuilder.

Confirmed

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Unnamed Update  —  September 27, 2017

Algorithm trackers (including MozCast) and webmaster chatter spotted increasing flux starting around September 25th, which seemed to spike on the 27th, after a period of relative calm. No update was officially confirmed.

Unconfirmed

Google is updating their search results, it is in flux, search results are shuffling around. But I only try to report it when the signals all seem to be higher than the normal day to day shuffles. I always see people complaining about changes in Google but when it reaches certain levels, that is when I decide to cover it.

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Chrome HTTPS Warnings  —  October 17, 2017

With the launch of Chrome 62, Google started warning visitors to sites with unsecured forms. While not an algorithm update, this was an important step in Google's push toward HTTPS and may have a material impact on site traffic.

Confirmed

Google said, “Beginning in October 2017, Chrome will show the ‘Not secure’ warning in two additional situations: when users enter data on an HTTP page, and on all HTTP pages visited in Incognito mode.”

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Featured Snippet Drop  —  October 27, 2017

Over a period of a few days from October 27-31, there was a substantial drop in Featured Snippets. This co-occurred with a jump in Knowledge Panels, as Google seemed to add many panels for broad terms and objects ("travel", "toilet", "web design", etc.). Some of these panels disappeared around December 15.

Unconfirmed

Something happened at the end of October

We recently noticed that some of the answer boxes we worked really hard to get were just gone. No notice, no goodbye. We looked across the industry, as well as our tracked keywords for clients, and there did indeed seem to be something going on.

Take a look at what the Mozcast SERP Feature history shows over the past 30 days (pulled November 2, 2017) for Featured Snippets:

That is a drop from around 16 percent to 14 percent over just a couple of days, and after a fairly long period where we’ve seen them generally increase.

We use STAT for keyword tracking. In the example below, our client experienced a 6 percent drop in answer boxes appearing for keywords they track.

Although not a huge dip, it is enough to see a reduction in traffic — definitely not a trend we’d want continuing for them.

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Unnamed Update  —  November 14, 2017

Algorithm trackers and webmaster chatter detected a high amount of flux, peaking (in our data) around November 15. Google did not confirm an official update.

Unconfirmed

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Snippet Length Increase  —  November 30, 2017

After testing longer search snippets for over two years, Google increased them across a large number of results. This led us to adopt a new Meta Description limit -- up to 300 characters from the previous 155 (almost doubling). Google confirmed an update to how snippets are handled, but didn't provide details.

Confirmed

Summary: The end of November saw a spike in the average length of SERP snippets. Across 10K keywords (90K results), we found a definite increase but many oddities, such as video snippets. Our data suggests that many snippets are exceeding 300 characters, and going into 2018 we recommend a new meta description limit of 300 characters.

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