SEO Strategy - Keyword Density Revisited

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There has always been something intriguing about the concept of keyword density. Many years ago, search engine optimization professionals relied on keyword and phrase density (also called keyword prominence) as one of the core strategies behind top rankings. What made keyword density so appealing is that it was straightforward and simple. The downside is that it was misused if not outright abused. While keyword density remains a bit dated as an SEO tactic in general, there is still plenty of value in revisiting the practice as a means to improve rankings -- if you know how to use it.

There are far more accurate (better) ways for search engines to determine true relevance than keyword density, and each search engine has its own means and methods to rank sites for a particular keyword or phrase. Search engines consider usage data, anchor text of inbound links, site/domain age, and general authority (all of which have been discussed here at WM), but each one of these criteria also has its own way of relating/associating keywords and key phrases. This is called natural language processing and is something you, as someone responsible for high site rankings, have an immense amount of control over and should spend time on improving.

The issue is not that keyword density is a bad means to determine relevance; it’s just that search engine algorithms have evolved while many SEOs and the search engine optimization software tools they use, have not. Where keyword density tools fall short is their ability to provide meaningful assessment and objective insights into ranking improvements. But keyword density tools are meaningful when used in conjunction with the right tactic. The “right” tactic in this case is to reduce on-page irrelevance and to boost relevance.

The semantic algorithms of popular search engines typically look at supporting vocabulary when determining the relevancy of a page. The question to ask yourself is simple: If you removed the keyword phrase being targeted from your page, would it be very easy to rank for that term? If search engines can still determine what your page is about with the remaining/supporting text, then the answer is a definitive Yes. Let’s look at a few popular keyword density analyzer tools to see this in action.

Dave Naylor’s Keyword Density Tool provides metrics about the content and even some technical information about a website. The tool provides several data points which are useful when trying to get a big-picture view of why competitors are outranking your site. For example, you might notice that a website with which you are competing has a higher keyword density in its title or page headings than you do. Naylor’s tool provides a quick overview of this very important information.

Should you want to dig deeper into the relevancy of keywords and pages on your own site (or that of your competitors), then check out Ranks.nl’s Keyword Density and Prominence Analyzer. The tool provides a “Ranks Wizard” metric that is helpful in identifying the non-primary keywords on a page to support the search engines in their quest to relate/associate keywords and phrases and as you optimize for the long tail.

These tools and many others are useful in determining how relevant a page is to a specific keyword and in gaining the perspective of a search engine crawler, but they are also useful in finding and minimizing irrelevance. As search engines continue to evolve their algorithms, rest assured that keyword density remains a good initial measure of future performance (but only if you know how to use it). Does keyword density carry as much “weight” as it did before? Not by a long shot, but when you know how to use it correctly and to your advantage, your site’s ranking will be that much better. Instead of chasing some specific keyword density percentage, use density as a measuring stick to reassuring yourself that you are doing all you can to convey to search engines that the page you are optimizing is indeed relevant.

 

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5 comments

mOxby Design - SEO & Web Design 06-01-2011 10:42 AM

Keyword density has so many issues and although there used to be a good way to monitor a level of density, it really doesn't matter.

Okay, in terms of your <a href="www.moxby.org.uk/seo-peterborough.html" target="_blank">SEO</a> strategy, you will need your keywords and phrases in your content, but the key is "natural". Does it read well? It's good to read your content out loud and if it sounds like bad grammar, then search engines are likely to see it as being spammy.

It's clear that KWD isn't so much a tactic, as a slight guide in ensuring relevance which this article picks up on. So write for human readers and the search engines will appreciate it.

Sandy Allain 02-02-2012 10:20 PM

I have a friend who is a seo consultant in Spain, and he is one that swears by writing for humans instead of spamming keywords to increase the keyword density. I am appreciative of that, since most of us on the internet are humans and not bots, and would definitely prefer to read a coherent article than one laden with keywords and make no sense.

Kevin Yeaman 05-08-2012 8:40 PM

While web marketing gurus have tonnes of tricks up their sleeves, it is often better to encourage web site owners to build quality content that is relevant instead of trying to utilize a loophole. Many people learned that with the Penguin, and it is time for some changes to be made.

Carlos Fabuel 10-22-2012 1:23 PM

It is better write for humans thinking in content and in marketing

IvanP 07-16-2013 9:45 AM

Me ha parecido muy interesante la verdad y te doy gracias por las aclaracuiones. Yo participo en un blog sobre consultoria seo valencia por si quereis echar una mirada. Un saludo kloudnet.net/consultoria-seo-valencia

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