Random Google?
-
In 2008 we performed an experiment which showed some seemingly random behaviour by Google (indexation, caching, pagerank distributiuon).
Today I put the results together and analysed the data we had and got some strange results which hint at a possibility that Google purposely throws in a normal behaviour deviation here and there.
Do you think Google randomises its algorithm to prevent reverse engineering and enable chance discoveries or is it all a big load balancing act which produces quasi-random behaviour?
-
There were no detectable inbound links to any of those pages before the pagerank update. What other signals could have affected it... content quality alone? By the way content was written using the same writer and same quality level.
-
I strictly monitored that there are no inbound links for example and the link profile was clean until public TBPR update at least. Once suspicion I have and was not able to confirm and include in my research was that there was a plain link added to that odd page which has PR3 and it shouldn't. That would basically prove the theory that any external link fortifies the importance of the page to the point of higher indexation/caching. Something like internal link + external link = match made in heaven.
-
I wonder if those PR5 "anomalies" and the PR3 one really are not "anomalies" due to other ranking factors as external backlinks to those pages.
-
I believe there are two many other factors that are possible that could have prevented that test from being accurate. How do you know 100% for sure that there are no variables you are overlooking?
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
-
How to leverage Google Images?
My Google search rankings are improving rapidly at the moment, but a lot of my rankings are for images (presume that means the images are appearing near the top in Google Images). How do I capitalise on that? It's not really much help to me that my images are popular unless it results in traffic to the pages where those images are used. I am running Wordpress so I have the option to have images embed as "no link", "link to attachment page", "link to original image", etc. Is there any advantage of using one of these over the other? I'd really like to set it up so that when a Google Images user clicks "View Image" it loads the attachment page or the host content page rather than the image. Bad SEO? I'm not sure if the fact that I'm using Jetpack Photon CDN image hosting will make this more complicated or not. Tony
Intermediate & Advanced SEO | | Gavin.Atkinson0 -
Why is this site not indexed by Google?
Hi all and thanks for your help in advance. I've been asked to take a look at a site, http://www.yourdairygold.ie as it currently does not appear for its brand name, Your Dairygold on Google Ireland even though it's been live for a few months now. I've checked all the usual issues such as robots.txt (doesn't have one) and the robots meta tag (doesn't have them). The even stranger thing is that the site does rank on Yahoo! and Bing. Google Webmaster Tools shows that Googlebot is crawling around 150 pages a day but the total number of pages indexed is zero. It does appear if you carry out a site: search on Google however. The site is very poorly optimised in terms of title tags, unnecessary redirects etc which I'm working on now but I wondered if you guys had any further insights. Thanks again for your help.
Intermediate & Advanced SEO | | iProspect-Ireland0 -
Google Custom Searches with site CSS
Anyone good with GCS. I want to add Google custom searches in my site but with my site CSS.
Intermediate & Advanced SEO | | csfarnsworth
I need results from GCS but want to display with my website CSS. Website is in OSCommerce and php.0 -
Google Not Indexing XML Sitemap Images
Hi Mozzers, We are having an issue with our XML sitemap images not being indexed. The site has over 39,000 pages and 17,500 images submitted in GWT. If you take a look at the attached screenshot, 'GWT Images - Not Indexed', you can see that the majority of the pages are being indexed - but none of the images are. The first thing you should know about the images is that they are hosted on a content delivery network (CDN), rather than on the site itself. However, Google advice suggests hosting on a CDN is fine - see second screenshot, 'Google CDN Advice'. That advice says to either (i) ensure the hosting site is verified in GWT or (ii) submit in robots.txt. As we can't verify the hosting site in GWT, we had opted to submit via robots.txt. There are 3 sitemap indexes: 1) http://www.greenplantswap.co.uk/sitemap_index.xml, 2) http://www.greenplantswap.co.uk/sitemap/plant_genera/listings.xml and 3) http://www.greenplantswap.co.uk/sitemap/plant_genera/plants.xml. Each sitemap index is split up into often hundreds or thousands of smaller XML sitemaps. This is necessary due to the size of the site and how we have decided to pull URLs in. Essentially, if we did it another way, it may have involved some of the sitemaps being massive and thus taking upwards of a minute to load. To give you an idea of what is being submitted to Google in one of the sitemaps, please see view-source:http://www.greenplantswap.co.uk/sitemap/plant_genera/4/listings.xml?page=1. Originally, the images were SSL, so we decided to reverted to non-SSL URLs as that was an easy change. But over a week later, that seems to have had no impact. The image URLs are ugly... but should this prevent them from being indexed? The strange thing is that a very small number of images have been indexed - see http://goo.gl/P8GMn. I don't know if this is an anomaly or whether it suggests no issue with how the images have been set up - thus, there may be another issue. Sorry for the long message but I would be extremely grateful for any insight into this. I have tried to offer as much information as I can, however please do let me know if this is not enough. Thank you for taking the time to read and help. Regards, Mark Oz6HzKO rYD3ICZ
Intermediate & Advanced SEO | | edlondon0 -
Does Google read code as is or as rendered?
Question - Does Google read code as is or as rendered? So for example, with a Facebook Like box, it has all the profile pictures of people...will Google see these as all separate links or ignore them?
Intermediate & Advanced SEO | | jhinchcliffe0 -
Adding Orphaned Pages to the Google Index
Hey folks, How do you think Google will treat adding 300K orphaned pages to a 4.5 million page site. The URLs would resolve but there would be no on site navigation to those pages, Google would only know about them through sitemap.xmls. These pages are super low competition. The plot thickens, what we are really after is to get 150k real pages back on the site, these pages do have crawlable paths on the site but in order to do that (for technical reasons) we need to push these other 300k orphaned pages live (it's an all or nothing deal) a) Do you think Google will have a problem with this or just decide to not index some or most these pages since they are orphaned. b) If these pages will just fall out of the index or not get included, and have no chance of ever accumulating PR anyway since they are not linked to, would it make sense to just noindex them? c) Should we not submit sitemap.xml files at all, and take our 150k and just ignore these 300k and hope Google ignores them as well since they are orhpaned? d) If Google is OK with this maybe we should submit the sitemap.xmls and keep an eye on the pages, maybe they will rank and bring us a bit of traffic, but we don't want to do that if it could be an issue with Google. Thanks for your opinions and if you have any hard evidence either way especially thanks for that info. 😉
Intermediate & Advanced SEO | | irvingw0 -
Multiple Google+ Local (Google Place) under one email address
As a automotive dealership group, we have 15+ business listings set up under one Google+ local account. Google+ Local (Google Places) offers the ability to upload a data file for 10+ listings, so we've kept all listings under one login for efficiency. Is there any specific local SEO benefit or any general benefit at all to having each business listing set up under their own separate email address?
Intermediate & Advanced SEO | | autoczar0 -
Google Adsense Good for SEO?
Is there any merit to the statement that Google will give some SEO value to sites that display Adsense? Or is there absolutely no SEO value for or against a site that displays Adsense Ads? Clearly, it would benefit Google's finance to give at least a small boost to sites that display Adsense, but do they do it? My guess is no, but I'm wondering ...
Intermediate & Advanced SEO | | applesofgold0