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On this Whiteboard Friday, Jon discusses the way to establish, repair, and stop cannibalization. He identifies three particular varieties of cannibalization: inner, worldwide, and subdomain.

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Video Transcription
Hey, Moz followers. How’s it going? My title is Jon Earnshaw. I am the Chief Product Evangelist at Pi Datametrics, and right now I will be speaking a few topic that’s tremendous near my coronary heart, and it has been near my coronary heart for over 15 years. After I was analyzing the SERP at some point and I began to find this uncommon flux, and what I used to be seeing was content material that was doing very well on web page 1 and all of the sudden it drops.
Then after just a few weeks, we observed that it wasn’t dropping for no cause. This content material was dropping attributable to different content material by some means conflicting. Now, we all know there isn’t any such factor as a reproduction content material penalty, and Google has all the time stated that. However what we have now understood since then is that Google and different serps as nicely have gotten more and more delicate to content material of the same nature, and that is what cannibalization is all about.
So right now we’re going to check out the way you establish it briefly as a result of you are able to do that with instruments. I will present you ways you repair it, and at last the way you forestall it from occurring within the first place, and should you get that bit proper, you clearly needn’t fear about one or two.
Step 1: Establish the kind of cannibalization

So cannibalization, there are three varieties. Nicely, there are extra, however there are three varieties that we form of want to pay attention to.
The primary one is inner battle or cannibalization. I will use these phrases interchangeably. That is the place your content material conflicts with itself. Then we have now worldwide battle, and that is a very completely different kettle of fish, as a result of that is handled, for instance, by hreflang. So we’ll maintain that out of the combo.
Then we have now subdomain battle, and subdomain battle is one thing that can all the time occur. For instance, when you have a assist subdomain, assist.mysite.com, and you have content material on there that is just like the content material in your predominant area, that is all the time going to battle. However we’re not going to speak about that right now. Actually, we will discuss inner battle and the way you repair it to start out with.
Step 2: Repair cannibalization points

So we could say you get up at some point, you have been on web page 1 for “males’s blazers.” All of us wish to be on web page 1 if we’re promoting males’s blazers. Then all of the sudden you discover your content material drops. Then once you take a better look, you may uncover that you’ve got a number of URLs returning over a time period for a similar key phrase. A degree to notice about cannibalization, it occurs at key phrase stage.
It isn’t content material stage. It is all concerning the key phrase. So one piece of content material will not be in battle for one more time period, for a by-product time period, for instance “males’s jackets” or “males’s summer time jackets,” and that web page might exist fantastically on web page 1. However we could say that you’ve got one, two, three, 4 pages.
These may very well be males’s summer time blazers, males’s winter blazers, males’s 2023 blazers, for instance. The probabilities are if these pages are related and in the event that they include the key phrase that you just’re making an attempt to place for, i.e., “males’s blazers,” within the title, likelihood is you are going to get battle as a result of we all know that the HTML title is without doubt one of the strongest indicators to Google from a theming perspective.
URL, title, Header 1, meta description, content material, all of that counts. However you will discover once you make modifications to the title, that may have a reasonably instantaneous influence on visibility in lower than 24 hours. So again to our scenario of cannibalization. For URLs, what will we wish to do? Nicely, we have to decide.
Which one will we wish to be the doorway into our ecosystem? As a result of if we do not decide on which one is the doorway into our ecosystem, then Google goes to make that call for us and we will find yourself in a scenario of cannibalization. Cannibalization, it may very well be in line. It may all be occurring on the backside of web page 1. Typically individuals say, “Nicely, I am on web page 1, however I do not actually care.”
However it’s best to care, as a result of think about your viewers are trying to find the boys’s blazer and so they discover your piece of content material and so they find it irresistible, and so they come again the subsequent day and so they Google it once more, and so they discover it once more, “Oh, it is a completely different web page.” They go into the location in a unique space. Abruptly, I am confused as a result of we have incoherent, uncoordinated, and haphazard doorways into our world.
So we have to make the choice and never depart that to the major search engines. There are a selection of issues that we are able to do to really repair this. However the very first thing we have to do is test the place of the URLs for different phrases, for by-product phrases. Do these items of content material place in their very own proper?
Earlier than we begin tampering, earlier than we begin enjoying with titles, earlier than we begin redirecting, earlier than we do something, do they place in their very own proper? Then we have now selections to make. One potential alternative, and I’ve seen lots of purchasers do that, is to really merge one of many older bits of content material and put that in with the brand new content material, and that works splendidly as a result of we’re not shedding something.
So we merge that, after which, in fact, we 301 the unique article. So we instantly get that injection of authority. Okay, downgrade the theme. How do you downgrade the theme? Bear in mind the title, the strongest ingredient on the web page? We will truly change the title so it is not about males’s blazers. We will say “males’s outfits for the summer time,” if that is acceptable.
Once more, let’s not do this if that web page positions in its personal proper as a result of we do not wish to lose that visitors. We will additionally test the visitors to the web page as nicely. Internally hyperlink. If we determine, for instance, that A is the web page that we wish to be our doorway, let’s give it the authority that it must place.
Let’s hyperlink internally from B, C, and D to A utilizing the anchor textual content “males’s blazers.” What are we doing? Nicely, we’re saying to Google this web page over right here is all about males’s blazers, and the anchor textual content and people hyperlinks are going to present that web page the authority that it wants.
So we do this together with a few of these different choices. We will additionally No Index if acceptable. So we have now plenty of instruments in our arsenal. However simply think about that we love all of those pages and we do not wish to lose these as a result of that is summer time blazers, winter blazers, linen blazers, and different blazers.
One other factor that you are able to do, in case your CMS permits, is to really construct a hub web page. Let’s name that hub web page Males’s Blazers, and let’s hyperlink down from the brand new web page, name that Web page X, Males’s Blazers, to this one utilizing the anchor textual content “summer time blazers,” to this one, Winter, Linen, and many others. Then crucially, we take the inner linking right here and we hyperlink again from all of those to the hub web page.
What have we created there? This glorious hub and spoke construction inside our web site that your viewers are going to make sense of and Google goes to make sense of it as nicely. So actually it is about sending alerts to Google in order that Google would not get confused.
So that is right down to us as a result of the search engine is extremely delicate. In order that’s how one can repair it, and you have plenty of selections.
Step 3: Forestall cannibalization
Lastly, my favourite half, how do you forestall it? How will we not must undergo this and this? Nicely, the important thing to stopping it truly is to make use of one of many 4 pillars of contextual optimization.

Contextual optimization is all about optimizing within the context of the SERP, optimizing within the context of your rivals, optimizing within the context of Google’s algorithms, and optimizing within the context of your ecosystem. So what we imply right here is about earlier than I inject any new content material with regards to males’s blazers into my ecosystem, I’ve obtained to cease and suppose and ask the query, “Is there something inside my ecosystem that’s probably conflicting?”
That is the primary query you ask, as a result of if there are different items of content material within the ecosystem with “males’s blazers” within the title, likelihood is they’ll battle, and you could find yourself taking one web page of web page 1 of Google and your web page by no means will get to web page 1. So you could lose out throughout. So a very easy approach of analyzing your ecosystem is with a web site operator.
So web site:www.mysite.com intitle, and also you herald intitle, and we’re on the lookout for, in inverted commas, “males’s blazers” as a result of that is going to return all of the pages out of your web site, that Google has listed, which have “males’s blazers” within the title.
Bear in mind, the strongest theme. So we’d discover earlier than we inject the brand new content material, hey, I’ve obtained A, B, C, and D in my ecosystem. So we then return right here, and we make the choice. If it is a new piece of content material, I can begin to undertake and deploy a number of of those methods to forestall it from occurring within the first place.
Truthfully, cannibalization of content material is inflicting a lot lack of visibility. I would estimate someplace round 40% of content material that is sitting on web page 2 and three is right down to this. Establish the conflicts. As soon as we have executed that, we establish the enhances. How do you establish the enhances and why?
Nicely, I will let you know why. As a result of once you put a brand new piece of content material into your ecosystem to go sit alongside these, it wants authority if it is going to carry out nicely, and one of the best and quickest approach of authority is to get that from different pages on a associated theme that discuss blazers or males’s type or males’s vogue. We do one other web site operator right here, web site:www.mysite.com.
Neglect the intitle. Let’s search for “males’s blazers” within the physique copy. We will do this, and we are able to discover enhances. As soon as you’ve got discovered the enhances, you wish to create hyperlinks utilizing “males’s blazers” because the anchor textual content to your new piece of content material. How do you discover older items of content material?
Inverted commas, “2019” or “2018.” Add that, you will all of the sudden begin to discover older content material that you have completely forgotten about and, along with these hyperlinks, which are going to inject authority. You’ll be able to then add some redirects. Actually, in a nutshell, that is all there’s to it, figuring out, fixing, and stopping, and I assure these are all going to be just right for you.
Thanks for watching.