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.
How much domain authority is passed on through a link from a page with low authority?
-
Hello,
Let's say that there is a link to site A from site B. The domain authority of site B is 85, but the link is on a page that has a page authority of only 1. Does much authority get passed along from site B to site A? (Let's assume site A has a domain authority of 35, if that's relevant.)
Thank you!
-
Thanks, Federico.
-
Thank you, Keri!
-
Thank you very much, Dr. Meyers! This was extremely helpful.
-
Unfortunately, Dr. Matt's out of town, so this answer won't be as thorough as I'd like, but the gist of it is that we factor in both DA and PA to some degree. If a site has very high DA but a very low PA (as in your example), we're going to bias somewhat toward the DA, as we believe Google sometimes does (a virtually unknown page on Wikipedia can rank very well, for example). Likewise, a high-PA page on a site with low DA may pass more through the PA, because (hopefully) that page has some legitimate authority.
It's a bit more complex, because DA and PA are related as well, so they do influence each other to some degree. On larger sites, the influence of any single page's PA is small, but the influence can be more obvious on smaller sites.
Putting aside our math, I think a link from a low-authority page on a high-authority site can be worthwhile. Look at directories, like DMOZ. I think it's important to make sure the low-PA page is indexed (some DMOZ pages aren't, because they're buried so deeply in the link structure), and I wouldn't get hung up on a link from a high-DA site. It's ultimately just one link. I wouldn't dismiss it as useless either, though. There's some amount of site/page balance in the mix and Google doesn't rely on only one type of authority.
-
I'm checking with Dr. Matt Peters, head of our Data Science team. It's less about secrecy and more that DA/PA are based on machine learning and have gotten a bit complex. Still, I suspect we can give you a general sense of how DA/PA pass through links. Posting this because I suspect an answer may take a day or two.
-
Well, it is a bit late for regular office hours for most Moz staff, so you may not hear an answer until tomorrow. The answer may also include "remember, what the search engines think is what matters", but you should get an answer with at least some information in the next couple of days.
-
and I am sure Moz will not answer this at all!
-
It is, but no one outside Moz can answer that, there are several metrics that affect authority passing, and I guess that most of those metrics and algos are property of Moz and most likely secret to prevent abuse.
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
-
Does anyone know the linking of hashtags on Wix sites does it negatively or postively impact SEO. It is coming up as an error in site crawls 'Pages with 404 errors' Anyone got any experience please?
Does anyone know the linking of hashtags on Wix sites does it negatively or positively impact SEO. It is coming up as an error in site crawls 'Pages with 404 errors' Anyone got any experience please? For example at the bottom of this blog post https://www.poppyandperle.com/post/face-painting-a-global-language the hashtags are linked, but they don't go to a page, they go to search results of all other blogs using that hashtag. Seems a bit of a strange approach to me.
Technical SEO | | Mediaholix0 -
Redirect multiple domains to 1 domain or not?
Hi there, I have client who has multiple domains that already have some PA and DA. Problem is that most websites have the same content and rank better on different keywords.
Technical SEO | | Leaf-a-mark
I want to redirect all the websites to 1 domain because it’s easier to manage and it removes any duplicate content. Question is if I redirect domain x to domain y do the rankings of domain x increase on domain y? Or is it better to keep domain x separately to generate more referral traffic to domain y? Thanks in advance! Cheers0 -
Does a no-indexed parent page impact its child pages?
If I have a page* in WordPress that is set as private and is no-indexed with Yoast, will that negatively affect the visibility of other pages that are set as children of that first page? *The context is that I want to organize some of the pages on a business's WordPress site into silos/directories. For example, if the business was a home remodeling company, it'd be convenient to keep all the pages about bathrooms, kitchens, additions, basements, etc. bundled together under a "services" parent page (/services/kitchens/, /services/bathrooms/, etc.). The thing is that the child pages will all be directly accessible from the menus, so there doesn't need to be anything on the parent /services/ page itself. Another such parent page/directory/category might be used to keep different photo gallery pages together (/galleries/kitchen-photos/, /galleries/bathroom-photos/, etc.). So again, would it be safe for pages like /services/kitchens/ and /galleries/addition-photos/ if the /services/ and /galleries/ pages (but not /galleries/* or anything like that) are no-indexed? Thanks!
Technical SEO | | BrianAlpert781 -
1000 Pages on old website. What to do with the 301 redirects for this domain?
Hi Moz Community, I have a 301 redirect question... I just acquired an old domain: Totally in my niche Domain is 14 years old Website exists of 1000 pages Great amount of backlinks Website is offline since about 2 weeks Will place a new website online asap with new url structure For the 50 best scoring pages I wrote a new, but fully comparable/related article. I will put a 301 redirect from those old to the new pages. My question: What to do with the 950 other url's? Should I put a 301 redirect to the homepage? Should I forward those pages to the 404 page? Should I divide the 950 url's with a 301 redirect to the 50 new ones? Another solution maybe? Any idea what would be the best solution so we can save as much Google juice as possible? Thanks in advance!
Technical SEO | | snorkel0 -
Does a subdomain benefit from being on a high authority domain?
I think the title sums up the question, but does a new subdomain get any ranking benefits from being on a pre-existing high authority domain. Or does the new subdomain have to fend for itself in the SERPs?
Technical SEO | | RG_SEO0 -
Why are these internal pages not showing any internal links?
If you look at Author profile pages like this one, http://experts.allbusiness.com/author/denise-oberry (THE top contributor on the site with over 82 posts under her belt), or any Author profile page, they show zero internal links or Page Authority. The same goes for most posts for each author on the site. Author pages should show internal links from every post the author has on the site. And specific posts should also have internal links from categories, etc. Yet they show zero. The only posts that show internal links and PA are ones that were either syndicated to the root domain's homepage, or syndicated to Fox Small Business. ZERO internal links. Does anyone know why this is? The root domain does not act this way with Author pages and posts. And I see nothing blocking links or indexing via the robots.txt file or page level nofollow tags. A real head scratcher for this SEO nerd, that I'm sure someone here will have a really simple answer to.
Technical SEO | | MiguelSalcido0 -
Domains
My questions is what to do with old domains we own from a past business. Is it advantages to direct them to the new domain/company or is that going to cause a problem for the new company. They are not in the same industry.
Technical SEO | | KeylimeSocial0 -
How to remove the 4XX Client error,Too many links in a single page Warning and Cannonical Notices.
Firstly,I am getting around 12 Errors in the category 4xx Client error. The description says that this is either bad or a broken link.How can I repair this ? Secondly, I am getting lots of warnings related to too many page links of a single page.I want to know how to tackle this ? Finally, I don't understand the basics of Cannonical notices.I have around 12 notices of this kind which I want to remove too. Please help me out in this regard. Thank you beforehand. Amit Ganguly http://aamthoughts.blogspot.com - Sustainable Sphere
Technical SEO | | amit.ganguly0