Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
SEO value in multiple backlinks from same domain and from various sub-domains.
-
-
A site has a link to my site as one of their main tabs, which means whenever a user clicks through to another page within the site, my link - being a main tab - is there. This creates thousands of links from this site. How does Google treat this? Do we have a rough formula estimate. In other words, assume it creates 1,000 backlinks would the SEO value be around the same as if I had just 2 link total as a main tab, but on 2 different non-related sites? Or, does it actually count fully as 1,000 links?
-
Links from various sub-domains. Several .EDU's are linking to my site. Different schools within the overall same university. Example: nursing.abc.edu links to my site, but so does business.abc.edu. For SEO does that count as much as if I had links from complete non-related universities, or would Google evaluate that these links are related (since same main domain) and that will discount any links more than 1 to some extent? If discounted, then what do we estimate the discount to be?
thank yoyu
-
-
Agreed. Thanks Cody.
-
If it had a good reason to be there, and you had a decent link profile, then you are probably safe. Even so, I'd say try to limit them to relevant pages.
The real question, though, is how much traffic is driving? If it is driving a lot of good traffic that converts, then you pretty much have to leave it there.
-
Cody, I would like to hear your opinion, but in Kristian's case, I would not think removing these site wide links would be a good idea, unless the links are spammy. Especially if the website has a good reason to be there (ex: it is a good resource, it is a sponsor, it si the parent company, etc.). As long as not all of the links in Kristian's backlink profile are site wide, I wouldn't link the website is at risk of a penalty. Also, I would not think removing a site wide link on an .edu site would be a good idea, just becuase all of the referral traffic potential.
Like I said, the site wide penalty seemed more geared to a web designer or hosting company that only have site wide links in their profile.
Cody, what do you think?
-
Even prior to reading that I would agree with your analysis. 2 links from separate domains are better than 2 links from the same root domain.
-
This article talks about a website that received the Penguin penalty, and was able to start recovering by reducing the amount of site wide links: http://searchenginewatch.com/article/2180722/Google-Penguin-1.1-Pushed-Out-As-Some-Sites-Report-Recovery
"A) Remove all of the crap sitewide links, weird anchors first, B) continue building good links and C) take advantage of press by pinging Danny Sullivan to try and get it featured on SEL to get in front of Google. Obviously A) was not going to be completely possible so I was going for "remove most of your crappy links."
So, I do believe that site wide links are bad, and that it would be better to limit the number of links. Also, here is a reference about the diminishing returns on several links from one domain: http://www.seomoz.org/blog/understanding-link-based-spam-analysis-techniques
"The first link from a domain carries the first vote and getting additional links from one particular domain will continue to increase the total value from a domain, but only to a point. Eventually inbound links from the same domain will continue to experience diminishing returns. Going from 1 link to 3 links from a domain will have more of an effect than 101 links to 103 links."
-
Kristian,
There is not really a downside to having a link on multiple page's of a website. You just can't expect all of these links to be counted a independent,and equal to a website with a link profile that has a wide variety of linking root domains.
I would not recommend removing any links on these website. I would just focus your time on getting links from other of root domains.
-
Here is a recent article in published in Search Engine Journal about subdomains and subpages, as they relate to SEO:
http://www.searchenginejournal.com/subdomains-or-subfolders-which-are-better-for-seo/6849/
It looks like Cody is right, Google does recognize them has seperate, but a recent tweak in Google's algorithim, now cause them to be recognized as being associated with each other.
I would think that this means a link from a subdoamin and a root domain would not be equal to two links from two different root domains.
Cody, thanks for you insight, and I would love to hear what you think?
-
- it sounds like you think there could be downside in having this many links. Again, it is from a main tab on their homepage, and since the main tabs follow on all pages, so does my website link. I understand if the site linked to my site from different locations (main tab, in article, footer etc etc) that looks odd. But since it is from a main tab that creates thousands of links I can't understand why that could be a negative.
-
-
To answer your first question, it does count all the links. However, there is a massive diminishing return for anything over 2 links on one site. So, having 1,000 links from one site would not be beneficial. Instead, have them change it so you get one link on their top two pages, and none anywhere else. You can use Opensiteexplorer.org and the top landing pages tab to find which two pages to request a link from.
-
A sub-domain is a separate site, and would therefor have its own ranking ecosystem. Even a www.abc.edu is a sub-domain of abc.edu. So, getting a link from a sub-domain would be as beneficial, everything else being equal, as getting it from the root domain. Just make sure it's just a link or two, and not site wide like you suggested you currently have.
-
-
thank you. This does make sense and I appreciate the insight. I am still curious if anyone may have even more specific insight on the matter. It would be interesting to know how much the SEO value gets reduced in both cases
-
These links do not count as 1,000 links from 1,000 seperate website, since Google does recognize linking root domains.
The most important link to your website would be from the page with the highest page authority, which is almost always the home page.
I am not 100% sure, but I remember reading about a recent Google algorithm update that targets multiple links from one domain. Web design firms were affected, since they typcally sign the footer, which creates a link on every page of the website.
The subdomain, works similar to a subpage. Google will notice the root dominan, which is abc.edu.
I do not think you are at risk of a penalty or anything like that, but if you want to continue to increase your rankings, once you get a link from a domain, I would focus my efforts on getting another link from a separate root domain, instead of a link from a subpage or subdomain from the same root domain.
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
-
When creating a sub-domain, does that sub-domain automatically start with the DA of the main domain?
We have a website with a high DA and we are considering sub-folder or sub-domain. One of the great benefits of a sub-folder is that we know we get to keep the high DA, is this also the case for sub-domains? Also if you could provide any sources of information that specify this, I can't see to find anything!
Intermediate & Advanced SEO | | Saba.Elahi.M.0 -
Do bulk 301 redirects hurt seo value?
We are working with a content based startup that needs to 301 redirect a lot of its pages to other websites. Will give you an example to help you understand. If we assume this is the startups domain and URL structure www.ourcompany.com/brand1/article What they want to do is do a 301 redirect of www.ourcompany.com/brand1/ to www.brand1.com I have never seen 301 as a problem to SEO or link juice. But in this case where all the major URLs are getting redirected to other sites i was wondering if it would have a negative effect. Right now they have just 20-30 brands but they are planning to hit a couple of hundreds this year.
Intermediate & Advanced SEO | | aaronfernandez0 -
Are "Powered By..." type footer backlinks good or bad for SEO?
Hi guys, We're running a software company which is also selling WP themes amongst other things. We've heard recently that footer backlinks like "Powered by BigBangThemes" might do more harm than good. Some clients usually forget to change them - so we want to make sure we stop including them in case this is true. Thanks!
Intermediate & Advanced SEO | | andy.bigbangthemes0 -
Move domain to new domain, for how much time should I keep forwarding?
I'm not sure but my website looks like is not getting it's juice as supposed to be. As we already know, google preferred https sites and this is what happened to mine, it was been crawling as https but when the time came to move my domain to new domain, I used 301 or domain forwarding service, unfortunately they didn't have a way to forward from https to new https, they only had regular http to https, when users clicked to my old domain from google search my site was returned to "site does not exist", I used hreflang at least that google would detect my new domain been forwarding and yes it worked but now I'm wondering, for how much time should I keep the forwarding the old domain to the new one, my site looks like is not going up, I have changed all the external links, any help would be appreciated. Thanks!
Intermediate & Advanced SEO | | Fulanito1 -
Removing poor domain authority backlinks worth it?
Hey Moz, I am working with a client on more advanced SEO tactics. This client has a reputable domain authority of 67 and 50,000+ backlinks. We're wanting to continue SEO efforts and stay on top of any bad backlinks that may arise. Would it be worth asking websites (below 20 domain authority) to remove our links? Then, use the disavow tool if they do not respond. Is this a common SEO practice for continued advanced efforts? Also, what would your domain authority benchmark be? I used 20 just as an example. Thanks so much for your help. Cole
Intermediate & Advanced SEO | | ColeLusby1 -
Best Practices for Moving a Sub-Domain to a Sub-Folder
One of my clients is moving their subdomain to a subfolder on their main domain. (ie. blog.example.com to example.com/blog) I just wanted to get everyone's thoughts on some best practices for things we should be doing/looking for when making this move.? ie WMT, .htaccess, 301s etc? Thanks.
Intermediate & Advanced SEO | | DarinPirkey0 -
Is it safe to 301 redirect old domain to new domain after a manual unnatural links penalty?
I have recently taken on a client that has been manually penalised for spammy link building by two previous SEOs. Having just read this excellent discussion, http://www.seomoz.org/blog/lifting-a-manual-penalty-given-by-google-personal-experience I am weighing up the odds of whether it's better to cut losses and recommend moving domains. I had thought under these circumstances it was important not to 301 the old domain to the new domain but the author (Lewis Sellers) comments on 3/4/13 that he is aware of forwards having been implemented without transferring the penalty to the new domain. http://www.seomoz.org/blog/lifting-a-manual-penalty-given-by-google-personal-experience#jtc216689 Is it safe to 301? What's the latest thinking?
Intermediate & Advanced SEO | | Ewan.Kennedy0 -
How to do geo targeting for domain and sub directories in Webmaster tool?
Hello All, How can i do geo targeting in multiple countries on my ** root domain and sub **directories in Webmaster tool. My domain is "abc.com" and i want to target three countries UAE , Kuwait, Saudi arabia. So, Can i assign geo targeting in Webmaster tool , Root domain for UAE country and make other two sub directories for Kuwait and saudi ? abc.com - UAE (geo targeting) abc.com/kw - Kuwait (geo targeting) abc.com/sa - Saudi (geo targeting) Or Root doamain should be not assign for any country and Make three sub directories for UAE, Kuwait , and saudi and targeting them there geo locations. abc.com - Unlisted (geo targeting) abc.com/uae/ - UAE (geo targeting) abc.com/kw/ - Kuwait (geo targeting) abc.com/sa/ - Saudi (geo targeting)
Intermediate & Advanced SEO | | rahul110