Link Echoes (a.k.a. Link Ghosts): Why Rankings Remain Even After Links Disappear

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https://moz.com/images/blog/banners/whiteboard-friday-27dcaca_2021-03-31-015444.png?w=1920&auto=compress%2Cformat&fit=crop&dm=1617155684&s=7c33fb6bbf8889060a5aa6a65706fb5d 1920w" width="640" height="217" alt="Whiteboard friday 27dcaca" sizes="(min-width: 2000px) 1920px, (min-width: 768px) 1280px, (min-width: 320px) 640px, 320px"> <div class="row"> <article id="article-top" class="position-relative col-12"> <div class="body-block mt-md-8"> <div class="row justify-space-between"> <div class="col col-md toc-and-media"> <h1 class="h2 d-block d-md-none mb-2">Link Echoes (a.k.a. Link Ghosts): Why Rankings Remain Even After Links Disappear</h1> <div class="d-block d-md-none"> <div class="categories mb-2"> <a href="https://moz.com/blog/category/whiteboard-friday">Whiteboard Friday</a> </div> </div> <div class="d-block d-md-none"> <div class="d-flex align-items-start align-items-md-center mr-md-2 mr-lg-0"> <img src="https://moz.com/images/user/photo/63-1500083700_2021-03-30-204027.jpg?w=160&h=160&auto=compress%2Cformat&fit=crop&dm=1617136827&s=ff0198808ac5e9265043b6bdffa1601c" alt="Rand Fishkin" class="blog-avatar mx-4 mx-sm-5 my-4 my-md-2 ml-md-0" width="160" height="160" loading="lazy"> <div class="metadata-layout mt-2 mt-md-0 mr-1"> <div> <address class="mb-0">By: <a rel="author" href="https://moz.com/community/users/63" target="_blank" rel="noopener noreferrer"> Rand Fishkin </a> </address> </div> <div class="numerics mt-4 mt-sm-0 px-4 py-3 background-ultra-light-gray"> <time datetime="2014-08-15" class="pr-5"> <svg class="icon small icon-calendar-simple" > <use href="#icon-calendar-simple"> </svg> August 15, 2014</time> <svg class="icon small icon-clock" > <use href="#icon-clock"> </svg> <span class="time-read"></span> </div> </div> </div> </div> <div class ="d-block d-md-none"> <p><small class="d-block text-light-gray">The author's views are entirely their own (excluding the unlikely event of hypnosis) and may not always reflect the views of Moz.</small></p> </div> <div class="sticky-top-replacer"></div> <div class="sticky-top toc-wrapper mb-4"> <h3>Table of Contents</h3> <div class="table-of-contents"></div> <aside class="blog-social-wrapper d-none d-md-block"> <ul class="social-buttons social-buttons-horizontal social-buttons- sticky-social-buttons my-6"> <li class="social-button social-button-twitter js-twitter-popup" data-text="Everyone knows what happens when a page earns new links from high-quality sites: Rankings improve. What happens when those links disappear, though? In today's Whiteboard Friday, Rand explains that the answer isn't what we might think." data-url="https://moz.com/blog/link-echoes-ghosts-whiteboard-friday" data-via="moz"> <svg class="icon icon-twitter" > <use href="#icon-twitter"> </svg> </li> <li class="social-button social-button-facebook js-facebook-popup" data-u="https://moz.com/blog/link-echoes-ghosts-whiteboard-friday" data-text="Everyone knows what happens when a page earns new links from high-quality sites: Rankings improve. What happens when those links disappear, though? In today's Whiteboard Friday, Rand explains that the answer isn't what we might think."> <svg class="icon icon-facebook" > <use href="#icon-facebook"> </svg> </li> <li class="social-button social-button-linkedin js-linkedin-popup" data-url="https://moz.com/blog/link-echoes-ghosts-whiteboard-friday" data-hl="en" data-title="Link Echoes (a.k.a. Link Ghosts): Why Rankings Remain Even After Links Disappear"> <svg class="icon icon-linkedin" > <use href="#icon-linkedin"> </svg> </li> <li class="social-button social-button-copy js-copy-url" data-url="https://moz.com/blog/link-echoes-ghosts-whiteboard-friday"> <svg class="icon icon-files" > <use href="#icon-files"> </svg> <span class="copy-alert hidden background-ultra-light-gray">Copied!</span> </li> </ul> <script> mozModules.push("share-buttons"); </script> </aside> </div> </div> <div class="col col-12 col-md-8 reading-panel"> <div class="sticky-top-replacer"></div> <div class="sticky-top pt-2 reading-panel-column"> <div class="progress-wrapper position-relative py-2"> <div class="progress blog-progress"> <div class="progress-bar bg-primary" data-progress="true" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100"></div> </div> </div> <div class="content-check-mark pt-2"></div> </div> <div class="article-body"> <div class="d-none d-md-block"> <div class="d-flex align-items-start align-items-md-center mr-md-2 mr-lg-0"> <img src="https://moz.com/images/user/photo/63-1500083700_2021-03-30-204027.jpg?w=160&h=160&auto=compress%2Cformat&fit=crop&dm=1617136827&s=ff0198808ac5e9265043b6bdffa1601c" alt="Rand Fishkin" class="blog-avatar mx-4 mx-sm-5 my-4 my-md-2 ml-md-0" width="160" height="160" loading="lazy"> <div class="metadata-layout mt-2 mt-md-0 mr-1"> <div> <address class="mb-0">By: <a rel="author" href="https://moz.com/community/users/63" target="_blank" rel="noopener noreferrer"> Rand Fishkin </a> </address> </div> <div class="numerics mt-4 mt-sm-0 px-4 py-3 background-ultra-light-gray"> <time datetime="2014-08-15" class="pr-5"> <svg class="icon small icon-calendar-simple" > <use href="#icon-calendar-simple"> </svg> August 15, 2014</time> <svg class="icon small icon-clock" > <use href="#icon-clock"> </svg> <span class="time-read"></span> </div> </div> </div> </div> <h1 class="h2 d-none d-md-block mt-4 mt-md-0 mb-2">Link Echoes (a.k.a. Link Ghosts): Why Rankings Remain Even After Links Disappear</h1> <div class="d-none d-md-block"> <div class="categories mb-2"> <a href="https://moz.com/blog/category/whiteboard-friday">Whiteboard Friday</a> </div> </div> <div class ="d-none d-md-block"> <p><small class="d-block text-light-gray">The author's views are entirely their own (excluding the unlikely event of hypnosis) and may not always reflect the views of Moz.</small></p> </div> <div class="body-block mt-8"> <p> One of the more interesting phenomena illustrated by Rand's IMEC Lab project is that of "link echoes," sometimes referred to as "link ghosts." The idea is that if we move a page up in rankings by pointing links to it, and then <em>remove </em>those links, the bump in rankings often remains.</p><p>In today's Whiteboard Friday, Rand explains what's going on.</p><p>One quick note: Rand mentions a bit.ly link in this video that isn't quite accurate; <a href="http://bit.ly/imeclab" target="_blank">here's the correct one</a>. =)</p> <div align="center"> <p> <iframe src="//fast.wistia.net/embed/iframe/08k7dkk7d7" allowtransparency="true" frameborder="0" scrolling="no" class="wistia_embed" name="wistia_embed" allowfullscreen="" mozallowfullscreen="" webkitallowfullscreen="" oallowfullscreen="" msallowfullscreen="" width="640" height="388"> </iframe> </p> </div><p> For reference, here's a still of this week's whiteboard!</p><p> <img src="//moz.com/uploads/blog/53ed2ce9a10c46.66306388.jpg" alt="" style="box-shadow: 0 0 10px 0 #999; border-radius: 20px; margin-left: auto; margin-right: auto;"></p><h2>Video Transcription</h2> <div> <p>Howdy Moz fans and welcome to another edition of Whiteboard Friday. This week I'm going to talk a little bit about link echoes. This is the reverberation of the effect of a link across Google's link graph and across the rankings, that has an impact even after a link has been removed. In the past, we have also referred to these as link ghosts, but I think link echoes is actually a much better name. I appreciate some folks pointing that out for me.</p> <p>Let me show you exactly what I'm talking about. So, as you might know, I've been running a number of tests, and those tests have been happening through a project I call IMEC Lab. If you go to <a href="http://bit.ly/imeclab" target="_blank">http://bit.ly/imeclab</a>, you will find this project ongoing.</p> <p>We've been performing a number of tests over the last six months. I started with a smaller group. The group has gotten bigger. So we've been able to test some really fascinating things. A number of those have been around tests related to links. I'm going to share one of those tests, because it helps really highlight what's going on with link echoes.</p> <p>So we had a page point ranking number 31 for a key phrase, a not very competitive keyword search phrase, and the only reason I'm not transparently sharing these, at least not yet, is because we prefer that Google didn't know all of the websites and pages that we're pointing links from. Otherwise, they could potentially mess with the test. We like to keep the test results as clean as possible, and so we're not disclosing these for right now.</p> <p>Another page, page B ranking number 11 for the same query. So page ranking for query A, that's page A ranking number 31, page B ranking number 11. Of course, our first step . . . well, this was one of the steps in our test was we pointed 22 links from 22 different websites, all the same pages of those sites to both A and B. We were actually trying to test anchor text. So we pointed anchor text exact match links at A, non-match at B. We wanted to see which one would boost it up. Some of the links we put first, some of the links we put second. We tried to control a bunch of variables.</p> <p>We ran tests like these many times. I think this particular one we repeated four or five different times. In this case, we saw A, the one that was ranking number 31, it moved up to position one. Just 22 links were able to move it, bam. Anchor text links able to move it up to position one. Anchor text links obviously still pretty darn powerful. We could see that in each of our tests.</p> <p>B we pointed those same 22 links at, that moved up 6 positions. Remember it didn't have the exact match anchor text, so it moved up to position five, still quite impressive.</p> <p>Then we did something else. We took those links away. We removed all the links, and this is pretty natural. We want to run more tests. We're going to use some of these same sites and pages, so we removed all the links, no longer exist. The next week, they'd all been indexed. What happened?</p> <p>Well, gosh, page A, that was ranking number 31 and moved up to 1, even after all those pages that were linking to it had been indexed with no link there anymore by Google, didn't move. It stayed in position number one. That's pretty weird. Almost the same thing happened with result B. It moved down one position. It's ranking number six.</p> <p>Even weirder, this happened over four and a half months ago. We're now in the middle end of July. This was in mid-April, early April. That's a very long time, right? Google's indexed these pages that we're linking many times, never seen the links to them. As far as we can tell, there are no new links pointing to either of those pages. At least we haven't seen them, and none of the link tools out there have seen them. So it's possible, maybe some new links.</p> <p>Here's where it gets weird. This effect of these link tests, remaining in place long after the link had been removed, happened in every single link test we ran, of which I counted eight where I feel highly confident that there were no confounding variables, feeling really good that we followed a process kind of just like this. The links pointed, the ranking rose. The links disappeared, the ranking stayed high. Eight different consecutive tests every single time. In fact, there wasn't one test where, when we removed the links, the rankings fell back to their original position. Some of them like this one fell a position or two. Almost everything that we moved from page two or three stayed on page one after we linked to it, even after removing the links.</p> <p>This argues strongly in favor of a phenomenon that some SEOs have speculated about for a good amount of time. I believe one of them is Martin Panayotov -- I might not be pronouncing his name correctly -- and, of course, Moz contributor Michael King, iPullRank. Both of them had commented on a post years ago saying link ghosts, aka link echoes, are real. You guys should look into them. Sorry it took us so long to look into this, but this is fascinating.</p> <p>Now, there could be a number of explanations behind this link echo phenomenon, the continuing reverberation of a link's effect on a ranking. It could be that maybe that page ends up performing well in Google's analysis of its user and usage data. It ranks well for this relatively unpopular query. It's ranking number one. And you know what? Google's finding that the click-throughs are still pretty high. There's not a lot of pogo sticking back to the results. Maybe they're going, "Hey, this page looks legit. Let's leave it here," even after the links disappear.</p> <p>It could be that the site or page was bolstered by other factors, other ranking factors that we may not know about. It could be that every one of these eight times when we moved it up, maybe by moving it up through links we inadvertently did something else to it. Maybe that helped it rank higher for other pages, and those other pages generated links each of these times. That's fairly unlikely when you repeat the test this many times, but not impossible.</p> <p>Or it could be that Google actually has something in their algorithm around link echoes, where they say, "Hey, you know what? After a link has disappeared, that doesn't necessarily mean we should take away the value of that link as a vote forever and ever." In fact, maybe we should, for a long time, perhaps depending on how many links the page has or how uncompetitive the search results are, or something that they say, "You know what? Let's leave some remnant, some echo, a ghost of that link's value in the ranking equation for the site or page." These things are all possible.</p> <p>What's fascinating about practice to me is that it means that, for a lot of us who worry tremendously about link reclamation, about losing links on sites or pages that may produce things freshly, but then remove them on blogs that don't always stay consistent across time, that we may be getting more value than we think from a link that disappears in the future. Of course, learning more about how Google works, about their operations is just fascinating to me. Google says their mission is to organize the world's information and to make it universally accessible and useful. Well, I think part of Moz's mission and my mission is to organize information about how Google works and make it universally accessible and useful. That's what I hope we're doing with some of these tests, particularly around link ghosts.</p> <p>So I'm looking forward to some great comments. I'm sure many of you are going to have things that you've observed as well. If you'd like to follow along with this and other tests, I'd suggest checking out . . . you can go to <a href="http://bit.ly/mozmadscience" target="_blank">bit.ly/mozmadscience</a> and see the full presentation from my MozCon talk, in which I talk about link ghosts and a number of other tests we've been performing. I'll be sharing a few of those individually here on Whiteboard Friday as well. But link echoes is such a fascinating one, I thought we should bring that out right away.</p> <p>Thanks everyone. Take care. We'll see you again next week for another edition of Whiteboard Friday.</p> </div><p> <a href="http://www.speechpad.com/page/video-transcription/">Video transcription</a> by <a href="http://www.speechpad.com/">Speechpad.com</a></p> </div> <aside class="blog-social-wrapper d-block d-md-none"> <ul class="social-buttons social-buttons-horizontal social-buttons- sticky-social-buttons my-6"> <li class="social-button social-button-twitter js-twitter-popup" data-text="Everyone knows what happens when a page earns new links from high-quality sites: Rankings improve. What happens when those links disappear, though? 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Link Echoes (a.k.a. Link Ghosts): Why Rankings Remain Even After Links Disappear - Moz