Posted on April 25, 2012 by
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Over the past few weeks there has been a lot of talk about “unnatural links detected” notices that are being sent to webmasters. If you have done a good job then you would have not seen the notice so here is what it looks like.

Received a notice but no change in my rankings?

The majority of sites which have received the unnatural links detected notice haven’t witnessed any major changes in their rankings, not yet anyway. In a way, it makes sense to notify webmaster beforehand to give them the chance to rectify things before their rankings/traffic drop.

Yesterday in announcement on Webmaster Central Blog, Matt Cutts stated:

In the next few days, we’re launching an important algorithm change targeted at webspam. The change will decrease rankings for sites that we believe are violating Google’s existing quality guidelines. We’ve always targeted webspam in our rankings, and this algorithm represents another improvement in our efforts to reduce webspam and promote high quality content. While we can’t divulge specific signals because we don’t want to give people a way to game our search results and worsen the experience for users, our advice for webmasters is to focus on creating high quality sites that create a good user experience and employ white hat SEO methods instead of engaging in aggressive webspam tactics.

In a way Google’s announcement is very timely, it is my personal view that the latest unnatural links detected notice is closely related to the upcoming algorithm update, particularly because Matt Cutts refers to violation of existing quality guidelines.  I should also point out that Matt Cutts also refers to spun content.

What kind of links lead to unnatural links detected notice?

Based on my own observation and backed by data at my disposal I think the main offender is site-wide links, particularly blogrolls. Obviously site-wide links are not the only offenders because if you accumulated a large number of links with the same signature/pattern then it would be very obvious to search engines that they are not editorial links. Furthermore, if you have acquired links through blog networks then rest assured that you will get a notice even if you have got away with it so far.

Google’s notice is very generic, it doesn’t give any information apart from saying that “examples of unnatural linking could include buying links to pass PageRank or participating in link schemes.” Therefore it is up to you to the offending links. Chances are that you either already know what you have been up to and are in the best position to recognize the links straight away or you have inherited a site. Obviously if you have inherited a site then you have to do a bit of digging.

How to find “unnatural links” in your link profile?

If you have inherited a site then there are a few different ways to pinpoint offending links. MajesticSEO has written a really good post on this, using a few different methodologies.

First and foremost, you need to analyse your link profile and there are two things you should look out for.

  1. Anchor Text Distribution
  2. Site-wide links

Let’s assume that you are optimising www.somebrandshoes.com. It will be very unnatural and highly unlikely for a lot of people to link to your website using “women’s shoes” as an anchor text. If your back link profile indicates that “women’s shoes” makes up a large percentage of your anchor texts then it is highly plausible that the vast majority of those links are built unnaturally.

The most easiest way to find offending links is to use CognitiveSEO. CognitiveSEO’s link classification and site classification features are pretty good for this task because it can help you analyse your link profile very quickly. You can use the link classification data to figure out which links originate from blogs and then drill down to see whether those links are placed in blogroll or not. Furthermore, CognitiveSEO provides rich data on anchor text distribution, see below.

Now that you know your top anchor texts, you need to figure where the vast majorities of these links originate from. Remember, you need to look out for site-wide links, particularly in blogroll sections. Click on Inbound Link Analysis tab and then click on Inbound Link Profiles. This will give an overview of your entire link profile. You will then need to use Inbound Links Filters to lists all the links that are placed in blogrolls, to do this you need to go into Link Positioning and then select Blogroll, see screenshot.

CognitiveSEO will now give you a list of links that are placed in blogrolls. Look at your top anchor texts and check for them in blogrolls. If “women’s shoes” anchor text appears in a number of blogrolls then those are your offending links. You need to get rid of those links and then notify Google about it through a reconsideration request via Google Webmaster Tools.

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  1. Kind of ridiculous that blogroll links are becoming less desirable — seems to me that, when authentic, it’s the highest endorsement of another site.

    • Yousaf says:

      I agree but unfortunately a lot people have abused blogrolls. But let us not forget that Google does take into account neighbourhoods and relevance. If you have a totally non-relevant link in a blogroll then I guess Google would be doing the right thing in this case.

  2. [...] doing before complaining to Google.1. It is very likely that you would have recieved an “unnatural links detected” notice. Analyse your back link profile and single out any site-wide links from non-relevant [...]

  3. [...] Detected Unnatural Links: The easiest way to identify offending links – by Yousaf Sekander [...]

  4. Yasir says:

    IMO Not all blogroll links are bad if they are relevant and sending you traffic. You should not remove those instead add nofollow to them to send a signal to Google that you are not trying to manipulate the SERPs.

    Cognitive SEO is a handy tool but I would suggest that all the available data should be use from SEOMoz, MajesticSEO, Ahrefs, WMT and dump into one big file for deeper analysis.

    I have recently did an analysis in which I compared MajesticSEO data with GWT data and noticed that both datasets overlapping ratio was nearly 56% and it continue to drop based on the ‘first found’ date in MajesticSEO data. This indicated to me that Google was probably considering fresh links (from 12 months or so) and not from previous years. For SEOmoz, the overlapping was 74%.

    I have mentioned this to Dixon Jones and he said he will do the same research and hopefully we wil have better results to rely upon.

    • Yousaf says:

      Hi Yasir,

      I agree not all blogrolls are bad, I remember when I was learning ActionScript a few years back I found some of the most incredible sites through blogrolls. Here is the main issue though, legitimate blogrolls links are always “branded” and not keyword rich so if you are doing keyword rich blogrolls that is definitely a no no.

      Regarding data sources, MajesticSEO, Ahrefs, SEOmoz, SEO SpyGlass, Blekko are some of the best sources and I would never settle on a single source because they all have limitations and biases. So if it was for a large scale project, I would gather all the data from all the aforementioned sources and normalize them and then look at what I am left with.

      Cognitive SEO takes data from a lot of sources, including some of ones mentioned above.