Reinforcing Rel Canonical? (Fixing Duplicate Content)
-
Hi Mozzers,
We're having trouble with duplicate content between two sites, so we're looking to add some oomph to the rel canonical link elements we put on one of our sites pointing towards the other to help speed up the process and give Google a bigger hint.
Would adding a hyperlink on the "copying" website pointing towards the "original" website speed this process up?
Would we get in trouble if added about 80,000 links (1 on each product page) with a link to the matching product on the other site? For example, we could use text like "Buy XY product on Other Brand Name and receive 10% off!"
-
Have you seen a corresponding drop-off in the ListFinder pages over that time. If the canonical is kicking in, you should see some of those pages fall out as more ConsumerBase pages kick in.
Is there a reason your canonical'ing from the more indexed site to the less indexed one. It could be a mixed signal if Google things that ListFinder is a more powerful or authoritative site. Cross-domain can get tricky fast.
Unfortunately, beyond NOINDEX'ing, it's about your best option, and certainly one of your safest. It's really hard to predict what the combo of cross-domain canonical plus link would do. From a dupe content standpoint, it's risk free. From the standpoint of creating 80K links from one of your sites to another of your sites, it's a little risky (don't want to look like a link network). Since you're only talking two sites, though, it's probably not a huge issue, especially with the canonical already in place.
Google interprets cross-domain canonical heavily, so it can be a little hard to predict and control. Interestingly, the ConsumerBase site has higher Domain Authority, but the page you provided has lower Page Authority than its "sister" page. Might be a result of your internal linking structure giving more power to the ListFinder pages.
-
Great post Peter.
Here are some links of a product that is on both sites. Hopefully this will help you provide some more insight.
http://www.consumerbase.com/mailing-lists/shutterbugsphotography-enthusiasts-mailing-list.html
http://www.listfinder.com/mailing-lists/shutterbugsphotography-enthusiasts-mailing-list.htmlThe ListFinder pages are currently mostly indexed (70k out of 80k) which makes me think they are different enough from one another to not warrant a penalty.
The ConsumerBase pages started indexing well when we added the rel canonical code to LF (went from about 2k pages to 30k in early December, but since 1/2/2013 we have seen a dropoff in indexed pages down to about 5k.
Thanks!
-
With products, it's a bit hard to say. Cross-domain canonical could work, but Google can be a bit finicky about it. Are you seeing the pages on both sides in the Google index, or just one or the other? Sorry, it's a bit hard to diagnose without seeing a sample URL.
If this were more traditional syndicated content, you could set a cross-domain canonical and link the copy back to the source. That would provide an additional signal of which site should get credit. With your case, though, I haven't seen a good example of that - I don't think it would be harmful, though (to add the link, that is).
If you're talking about 80K links, then you've got 80K+ near-duplicate product pages. Unfortunately, it could go beyond just having one or the other version get filtered out. This could trigger a Panda or Panda-like penalty against the site in general. The cross-domain canonical should help prevent this, whereas the links probably won't. I do think it's smart to be proactive, though.
Worst case, you could META NOINDEX the product pages on one site - they'd still be available to users, but wouldn't rank. I think the cross-domain canonical is probably preferable here, but if you ran into trouble, META NOINDEX would be the more severe approach (and could help solve that trouble).
-
Yes, sir - that would be correct.
www.consumerbase.com and www.listfinder.com.
The sites are not 100% identical, just the content on the product pages.
-
are these two sites on the same root domain? it seems like most of the feedback you're getting are from people who are assuming they are however, it sounds to me like there are two separate domains
-
Zora,
Google accepts cross domain canonical as long as the pages have more similar content.
It is not necessary to add hyperlink pointing to canonical page. If your sites are crawler friendly, canonical hints will change search results very quickly.
http://support.google.com/webmasters/bin/answer.py?hl=en&answer=35769
Ensure that Google doesn't find any issue with your Sitemaps. If you add products frequently, submit the updated Sitemap following the same schedule.
All the best.
-
I am sorry i am not understanding why you need a rel = in this matter if the sites are two different sites?
What is your end goal ?
-
We chose rel canonical because we still want users to be able to visit and navigate through site 2.
They are both e-commerce sites with similar products, not exactly identical sites.
-
Zora. Totally understand, but my input and what Majority of people do is redirect the traffic.
A server side htaccess 301 Redirect is your BEST choice here.
Why dont you want o use a 301 and prefer a Rel, curious on what your take is on this.
and Thanks for the rel update info i didnt know
-
Thanks for the info Hampig, I'll definitely take a look.
Rel Canonical actually works cross domain now, Google updated it from when it originally came out.
-
Zora hope you are doing well.
I came across this video about a few weeks ago. I think this is suppose to be found under Webmaster tools although i have not used it, i think it might be the best solution to get googles attention to portions of the pages and what they are suppose to be
http://www.youtube.com/watch?v=WrEJds3QeTw
Ok but i am confused a bit. You have two different domains ?
or two version of the same domain?
Because from the sound of it you have two different domains and using rel = con wont work and you would have to do a 301 redirect. Even for my sites when i change the pages around i use 301 redirect for the same existing site.
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Removing duplicate content
Due to URL changes and parameters on our ecommerce sites, we have a massive amount of duplicate pages indexed by google, sometimes up to 5 duplicate pages with different URLs. 1. We've instituted canonical tags site wide. 2. We are using the parameters function in Webmaster Tools. 3. We are using 301 redirects on all of the obsolete URLs 4. I have had many of the pages fetched so that Google can see and index the 301s and canonicals. 5. I created HTML sitemaps with the duplicate URLs, and had Google fetch and index the sitemap so that the dupes would get crawled and deindexed. None of these seems to be terribly effective. Google is indexing pages with parameters in spite of the parameter (clicksource) being called out in GWT. Pages with obsolete URLs are indexed in spite of them having 301 redirects. Google also appears to be ignoring many of our canonical tags as well, despite the pages being identical. Any ideas on how to clean up the mess?
Intermediate & Advanced SEO | | AMHC0 -
Is legacy duplicate content an issue?
I am looking for some proof, or at least evidence to whether or not sites are being hurt by duplicate content. The situation is, that there were 4 content rich newspaper/magazine style sites that were basically just reskins of each other. [ a tactic used under a previous regime 😉 ] The least busy of the sites has since been discontinued & 301d to one of the others, but the traffic was so low on the discontinued site as to be lost in noise, so it is unclear if that was any benefit. Now for the last ~2 years all the sites have had unique content going up, but there are still the archives of articles that are on all 3 remaining sites, now I would like to know whether to redirect, remove or rewrite the content, but it is a big decision - the number of duplicate articles? 263,114 ! Is there a chance this is hurting one or more of the sites? Is there anyway to prove it, short of actually doing the work?
Intermediate & Advanced SEO | | Fammy0 -
Duplicate peices of content on multiple pages - is this a problem
I have a couple of WordPress clients with the same issue but caused in different ways: 1. The Slash WP theme which is a portfolio theme, involves setting up multiple excerpts of content that can then be added to multiple pages. So although the pages themselves are not identical, there are the same snippets of content appearing on multiple pages 2. A WP blog which has multiple categories and/or tags for each post, effectively ends up with many pages showing duplicate excerpts of content. My view has always been to noindex these pages (via Yoast), but was advised recently not to. In both these cases, even though the pages are not identical, do you think this duplicate content across multiple pages could cause an issue? All thoughts appreciated
Intermediate & Advanced SEO | | Chammy0 -
Rel="canonical" questions?
On our site we have some similar pages for example in our parts page we have the link to all the electrical parts you can see here http://www.rockymountainatvmc.com/c/43/53/160/Electrical and we have a very similar page going from our accessories page to electrical here http://www.rockymountainatvmc.com/c/43/72/221/Electrical We are thinking about putting rel="canonical" from the accessories electrical page to the parts one. We would do this for several pages not just this one. Thoughts???
Intermediate & Advanced SEO | | DoRM0 -
Duplicate content on the same page--is this an issue?
We are transitioning to responsive design and some of our pages will not scale properly, so we were thinking of adding the same content twice to the same URL (one would be simple text -- for mobile and the other would include the images, etc for the desktop version), and content would change based on size of the screen. I'm not looking for another technical solution (I know google specifies that you can dynamically serve different content based on user agent)--I am wondering if any one knows if having the same exact content appear twice on the same URL will cause a problem with SEO (any historical tests or experience would be great). Thank you in advance.
Intermediate & Advanced SEO | | nicole.healthline0 -
Rel canonical issues on wordpress posts
Our site has 500 rel canonical issues. This is the way i understand the issues. All our blog posts automatically include a rel=canonical to themselves.
Intermediate & Advanced SEO | | acs111
eg a blog about content marketing has: Should this tag point to one of the main pages instead so the link juice is sent back to our home page?0 -
Fixing Duplicate Content Errors
SEOMOZ Pro is showing some duplicate content errors and wondered the best way to fix them other than re-writing the content. Should I just remove the pages found or should I set up permanent re-directs through to the home page in case there is any link value or visitors on these duplicate pages? Thanks.
Intermediate & Advanced SEO | | benners0 -
BEING PROACTIVE ABOUT CONTENT DUPLICATION...
So we all know that duplicate content is bad for SEO. I was just thinking... Whenever I post new content to a blog, website page etc...there should be something I should be able to do to tell Google (in fact all search engines) that I just created and posted this content to the web... that I am the original source .... so if anyone else copies it they get penalised and not me... Would appreciate your answers... 🙂 regards,
Intermediate & Advanced SEO | | TopGearMedia0