What are LSI Keywords? How to Find Them and Use Them

Posted by Mike (06/23/11)

If you”re business is SEO, you are no doubt familiar with LSI Keywords, but a very common question I hear from new marketers and clients is what is lsi? In short (but complicated terms) LSI means Latent Semantic Index, which if you ask Wikipedia it”s defined as:

“An indexing and retrieval method that uses a mathematical technique called Singular Value Decomposition (SVD) to identify patterns in the relationships between the terms and concepts contained in an unstructured collection of text.”

If that sounds confusing, it”s because it is. I prefer to call LSI keywords by my own acronym:




I call them Low Search Impact because an LSI keyword is not your focus keyword. You might receive search results for them – which you can check through Google Analytics – but they are not the focus of your campaign. While they might be low search impact, but they definitely have an important role in good on-page optimization.

lsi keywords

Now, what does that mean? Well, when I write an article, or copy for a page, I always put search engine optimization first; no matter what. I need to have good on-page SEO and properly optimized content; if nobody is going to see it and it doesn”t help my website, why would I post it? Does that mean that I”m going to stuff my pages full of keywords? No, not only do Google and other search engines recognize and penalize keyword stuffing, but you won”t be doing your readers any favors. I use keywords when I write (I used quite a bit in this article) but I use them where they don”t distract.

LSI keywords are a great companion to your focus keyword no matter where you use them – whether it”s an article submission, blog post, homepage content, whatever it might be; you need them. So now you”re probably wondering, “where do I find these LSI keywords?” Well, that”s the good news, they are incredibly easy to find, the best free lsi keyword tool is a lot closer than you might think.

what is lsiIf you use the Google Keyword tool, every time you put in a set of keywords or a singular keyword you are given their “keyword ideas”. Well that list is LSI keywords. Google is literally telling you what keywords it takes into account when searching for your main keywords. Take a look at the results the Google keywords tool spits out, they relate pretty closely to your main keyword, they might contain jameshallison casino alternate spellings or wordings, sometimes they might be different terms completely, but one thing is for sure; they are all related.

So how do you use them – you”ll have to wait for a future article detailing that – but in short: a variety of them should be used, a lot lighter than your main keyword, and liberally enough to be recognized but not penalized.

A smart marketer will sprinkle these keywords in every piece of content they write. To search engines (and Google in particular) an lsi keyword is associated with your main keyword and they will take those terms into account when ranking a particular page. So by sprinkling these terms in your content and articles, you are creating a more attractive page; which will certainly help with your search results.

You will no doubt have some issues trying to use these lsi keywords, and you might have to get creative. For example, one of my LSI keywords for this article was “what is lsi”, if you look back at the 1st paragraph, you can see how I fit that in without causing too much of a distraction.

Now LSI keywords and on-page content are not the only tools when it comes to search engine optimization, but they are a huge part of the process and extremely crucial. You can send thousands of links to a page, but if it doesn”t have properly optimized content it”s going to be a lot more difficult to be ranked highly in the SERPS. And without LSI keywords your content will not be as highly rewarded and important to the search engines.

So now that you know what they are and how to find them, can you tell how many LSI keywords I included in this article?

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