• http://www.analyticsseo.com Stephen James Lock

    This is a very interesting way to look at Panda, how do you think the social aspects should be viewed?

    Should we now be thinking:

    * PageRank (internal not the BS one ;-)
    * TrustRank
    * SocialRank
    * PandaRank

    Would be eager to hear your thoughts…


  • http://www.kathrinsiemokat.de/blog Kathrin Siemokat

    Great post, thank you :-)

    I agree, sometimes people say, that Panda is a change of the algorithm and that’s absolutely wrong. But I’d say, that Panda is an update of it. Because when Google includes a new ranking factor like Panda in its algorithm, they update their algo. I also think, that Panda is a very important ranking factor and important update, because it changed a lot in the SERPs.

    I think it’s interesting, that Matt said the Panda filter isn’t running all the time :-)

  • Winooski

    “Rather than being a change to the overall ranking algorithm, Panda is more a new ranking factor that has been added into the algorithm…”

    Not to be pedantic (i.e., you know I’m about to be pedantic), but when you add a ranking factor to a search results algorithm, you’re necessarily changing the algorithm. To use the cookie-baking analogy, if Panda is a new ingredient to the mix, then what you’re doing is changing the recipe to accommodate a brand-new ingredient alongside all the ingredients that were there in the older version of the recipe.

  • http://www.michael-martinez.com/ Michael Martinez

    Minor slipup, Danny? “These “PageRank updates” have an impact on rankings even though they are not themselves a change to the core ranking algorithm.”

    Not according to Google. You should know quite well that by the time a TBPR value has been updated, the actual change in PageRank was incorporated into the mix long before.

    “PageRank values for all pages aren’t constantly being updated, because it takes a lot of computing power to calculate them. ”

    According to Google, PageRank *IS* continually updated. Just not the toolbar values. It’s odd to see you make such an egregious mistake on PageRank, which you have written a great deal about through the years.

  • http://searchengineland.com/ Danny Sullivan

    Winooski, that’s an excellent point. Panda 1.0 was both a ranking factor update (Panda being calculated for the first time) and an algorithm change. But I’d say that after that, the Panda 2.0 stuff, certainly Panda 2.1 and 2.2, we’re more in the ranking factor update rather than algorithm model change.

    Of course, Panda 2.0 incorporated blocking data — and it might be that the blocking data is actually a ranking factor that’s independent of the quality assessment that actually happens in Panda. That’s certainly how we chose to list things on our Periodic Table Of SEO.

    Michael, when I used PageRank update, I meant an actual PageRank update of values in the algorithm system, not toolbar pagerank being visible. Those values are incorporated into the system before the toolbar gets them, as you know. Our PageRank article that I linked to explains this in more depth, so I didn’t dive in further about it here.

    But you’re right. Google has said that PageRank in the system is constantly being updated. That’s in our PageRank article, too. I’ll fix that. Chalk it up to a long day. Thanks for the catch.

  • http://www.blindfiveyearold.com ajkohn

    I don’t know. Ranking factors or signals are what comprise the algorithm. So any changes to those factors is essentially a change to the algorithm.

    If I decide to add 30% more chocolate chips to the cookie batter, the cookie is different even though the general components are all the same.

    Panda does feel like a filter, meaning that it’s run essentially outside of the algorithm and used to pre-screen sites, divvying the world up into quality buckets. Those with low quality enter the normal algorithm with a ‘Panda’ penalty.

    That means the algorithm proper hasn’t changed, but the the results certainly have. So the question is a bit about semantics, is an ‘algorithm update’ tied to whether the results change or how those changes were produced?

  • http://www.absoluteinternetmarketing.co.uk Simon

    Previoulsy the Panda update was rolled out to Europe a few weeks after the US, is this the case with 2.2 do you know?

  • http://www.MarketingGoodness.com TomSullivan@twitter

    Thanks Danny. I didn’t realize Panda updates were run on that kind of schedule vs. ongoing. Good to have the dates to sync with real world data.

  • http://www.morrowtech.co.uk/jon-wade Jon Wade

    Interesting that Google say they do not have the resources to run Panda all the time. I cannot help thinking that really are running is infrequently to deliberately make it harder for people to learn the exact triggers for low quality content. Nobody will make just one change and then wait 6 weeks for the next update. If a site does recover it is hard to pin point what factors really worked.

  • http://www.tcworkouts.com TCW

    This update has hit me hard. I started my WordPress blog in February and built up recently to getting 50-60 visitors a day. I now have 5-10 which has hit my income streams. I would argue against my content being of a low quality as I use Yoast SEO, plenty of header tags, keywords, links and unique content as well as providing plenty of updates. I’m scratching my head now trying to think about how I can rank highly again.

  • http://www.whoisbid.com/social-networks-worthless.html W.B.

    I personally don’t see any improvements in Google Search. I feel it has become much worse and open to massive exploitation by those who know what the filter is looking for.

  • http://www.theseoz.co.in/ John Smith

    Google is really a very popular search engine of today’s time and it’s not always clear where they are basing their algorithm but one thing is for sure that we should abide with their guidelines in order to rank higher on SERP’s.


  • Ceri Harris

    Great post, Done some research on how Google applies changes and filters to their algorithm since penguin, i know this relates to panda but still one of the best posts ive read.