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The Google Supplemental Index Has Not Existed In A Dozen Years

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The Google Supplemental Index Has Not Existed In A Dozen Years

Over the past several days I have noticed a bunch of SEOs sharing information about the Google supplemental index and talking SEO strategies related to it. Just as a PSA, the Google supplemental index has not been in existence for a dozen or so years now.

Today, in 2022, there is no such thing as the Google Supplemental Index.

Yes, pre-2010, Google maintained two indexes for technical reasons. The main index was updated more frequently and faster and the supplemental index was for pages of lower importance that didn’t need to be updated as quickly. Generally, pages in the main index would rank higher in Google Search than pages in the supplemental index. And Google would generally only rank pages in the supplemental index if it couldn’t find good matches in the main index.

In fact, Google use to label search results that came from the supplemental index, as such. Here is a screenshot I posted back in 2007 with this label:

click for full size

In December 2007, Google started to hide the supplemental index label, stating “We improved the crawl frequency and decoupled it from which index a document was stored in, and once these “supplementalization effects” were gone, the “supplemental result” tag itself—which only served to suggest that otherwise good documents were somehow suspect— was eliminated a few months ago. Now we’re coming to the next major milestone in the elimination of the artificial difference between indices: rather than searching some part of our index in more depth for obscure queries, we’re now searching the whole index for every query.”

Then in 2009 Google started testing a new indexing method called Caffeine and in 2010, Google launched Caffeine fully. With that launch, Google stopped using the supplemental index all together. Heck, Google still uses Caffeine today

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In any event, John Mueller of Google was asked to confirm that the supplemental index is not longer and he said on Twitter it’s safe to say that index from 2003 is now enjoying the great bit-bucket in the sky.”

So don’t let anyone confuse you or set you off in the wrong direction – Google’s index works differently than it did pre-2010 than it does post-2010 and there is no supplemental index anymore.

Forum discussion at Twitter.



Source: www.seroundtable.com

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Daily Search Forum Recap: April 25, 2024

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Here is a recap of what happened in the search forums today, through the eyes of the Search Engine Roundtable and other search forums on the web.


The Google March 2024 core update is still rolling out and the SEO chatter is super heated despite the tools calming. Google Ads API version 16.1 is now out. Google’s John Mueller says splitting and merging sites takes longer than normal site moves for Google to process. Google updated its favicon documentation. And a scathing report on how Google executive Prabhakar Raghavan killed Google Search.


Search Engine Roundtable Stories:


  • Google March Core Update Stilling Rolling Out & Heated SEO Chatter Continue


    Over the past few days, while I was offline, the SEO chatter around the Google search ranking volatility continued to be super heated. The Google tracking tools seemed to calm down a bit, but the chatter is still very heated. This is all while the Google March 2024 core update is still rolling out 51 days later.

  • Report: How Prabhakar Raghavan Killed Google Search


    Ed Zitron wrote a piece named The Man Who Killed Google Search. It goes through in detail how Prabhakar Raghavan, Google’s former head of ads – led a coup so that he could run Google Search, and how an email chain from 2019 began a cascade of events that would lead to him running it into the ground, he said.

  • Google Favicon Documentation Adds Rel Attribute Value Definitions


    Google has updated its favicon documentation for Google Search to add definitions for each supported rel attribute value in the Google Search favicon documentation.



  • Google Ads API Version 16.1 Now Available


    Google released version 16.1 of the Google Ads API yesterday. The update includes query assets for Demand Gen, more location service details, more support warnings, Target ROAS bid simulation and more.



  • Google: Splitting & Merging Sites Takes Longer Than Normal Site Migrations


    Want to scare an SEO? Just tell them they need to manage a site migration. Want to make an SEO faint? Tell them they need to manage to split a site into two or more sites while merging content on those sites. John Mueller from Google said it takes Google longer to process site splits and merges than normal site migrations.



  • Google Chefs In Dublin


    Here is a photo I found on Instagram of a bunch of chefs at the Google office in Dublin. I am not sure if this was for some event or if Googlers were doing some sort of cooking class but it was a photo that caught my eye.

Other Great Search Threads:

Search Engine Land Stories:

Other Great Search Stories:

Analytics

Industry & Business

Links & Content Marketing

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Local & Maps

Mobile & Voice

SEO

PPC

Search Features

Other Search

Feedback:


Have feedback on this daily recap; let me know on Twitter @rustybrick or @seroundtable, on Threads, Mastodon and Bluesky and you can follow us on Facebook and on Google News and make sure to subscribe to the YouTube channel, Apple Podcasts, Spotify, Google Podcasts or just contact us the old fashion way.

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Google Won’t Change The 301 Signals For Ranking & SEO

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Google Tracks

Gary Illyes from Google said on stage at the SERP conference last week that there is no way that Google would change how the 301 redirect signal works for SEO or search rankings. Gary added that it’s a very reliable signal.

Nikola Minkov quoted Gary Illyes as saying, “It is a very reliable signal, and there is no way we could change that signal,” when asked if a 301 redirect not working is a myth. Honestly, I am not sure the context of this question, as it is not clear from the post on X, but here it is:

We’ve covered 301 redirects here countless times – but I never saw a myth that Google does not use 301 redirects as a signal for canonicalization or for passing signals from an old URL to the redirected URL.

Forum discussion at X.

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Note: This was pre-written and scheduled to be posted today, I am currently offline for Passover.



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Google Again Says Ignore Link Spam Especially To 404 Pages

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Google Robot Blindfolds

I am not sure how many times Google has said that you do not need to disavow spammy links, that you can ignore link spam attacks and that links pointing to pages that 404/410 are links that do not count – but John Mueller from Google said it again.

In a thread on X, John Mueller from Google wrote, “if the links are going to URLs that 404 on your site, they’re already dropped.” “They do nothing,” he added, “If there’s no indexable destination URL, there’s no link.”

John then added, “I’d generally ignore link-spam, and definitely ignore link-spam to 404s.”

Asking if it would hurt to disavow, after responding with the messages above, John wrote:

It will do absolutely nothing. I would take the time to rework a holistic & forward-looking strategy for the site overall instead of working on incremental tweaks (other tweaks might do something, but you probably need real change, not tweaks).

Earlier this year we had tons of SEOs notice spammy links to 404 error pages, John said ignore them. In 2021, Google said links to 404 pages do not count, Google also said that in 2012 and many other times.

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Plus, outside of links to 404 pages, Google has said to ignore spammy links, time and time again – even the toxic links – ignore them. The messaging around this changed in 2016 when Penguin 4.0 was released and Google began devaluing links over demoting them.

Here are those new posts in context:

And in general, Google says it ignores spammy links, so you should too (not new) but this post from John Mueller is:

And then also on Mastodon wrote about a similar situation, “Google has 2 decades of practice of ignoring spammy links. There’s no need to do anything for those links.”

Forum discussion at X.

Note: This was pre-written and scheduled to be posted today, I am currently offline for Passover.

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