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  4. How much domain authority is passed on through a link from a page with low authority?

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How much domain authority is passed on through a link from a page with low authority?

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  • nyc-seo
    nyc-seo last edited by Feb 4, 2014, 11:51 PM

    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!

    1 Reply Last reply Reply Quote 0
    • nyc-seo
      nyc-seo @FedeEinhorn last edited by Feb 6, 2014, 4:44 PM Feb 6, 2014, 4:44 PM

      Thanks, Federico.

      1 Reply Last reply Reply Quote 0
      • nyc-seo
        nyc-seo @KeriMorgret last edited by Feb 6, 2014, 4:43 PM Feb 6, 2014, 4:43 PM

        Thank you, Keri!

        1 Reply Last reply Reply Quote 0
        • nyc-seo
          nyc-seo @Dr-Pete last edited by Feb 6, 2014, 4:43 PM Feb 6, 2014, 4:43 PM

          Thank you very much, Dr. Meyers! This was extremely helpful.

          1 Reply Last reply Reply Quote 0
          • Dr-Pete
            Dr-Pete Staff last edited by Feb 6, 2014, 4:41 PM Feb 6, 2014, 3:12 PM

            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.

            nyc-seo 1 Reply Last reply Feb 6, 2014, 4:43 PM Reply Quote 3
            • Dr-Pete
              Dr-Pete Staff last edited by Feb 5, 2014, 4:48 PM Feb 5, 2014, 4:48 PM

              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.

              1 Reply Last reply Reply Quote 1
              • KeriMorgret
                KeriMorgret @MoosaHemani last edited by Feb 5, 2014, 3:11 AM Feb 5, 2014, 3:11 AM

                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.

                nyc-seo 1 Reply Last reply Feb 6, 2014, 4:43 PM Reply Quote 0
                • MoosaHemani
                  MoosaHemani Banned @FedeEinhorn last edited by Feb 5, 2014, 2:48 AM Feb 5, 2014, 2:48 AM

                  and I am sure Moz will not answer this at all! 🙂

                  KeriMorgret 1 Reply Last reply Feb 5, 2014, 3:11 AM Reply Quote 0
                  • FedeEinhorn
                    FedeEinhorn last edited by Feb 5, 2014, 1:15 AM Feb 5, 2014, 1:15 AM

                    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.

                    MoosaHemani nyc-seo 2 Replies Last reply Feb 6, 2014, 4:44 PM Reply Quote 0
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