Latent Semantic Indexing is Vital for SEO Strategies

April 26, 2017
By Special Guest
Mandy Bular, CEO, Ginger Domain

A mention of the term “latent semantic indexing” (LSI) will likely result in puzzled looks among most. However, even though they might not be conversant with the term, it will be quite familiar to those who dabble in keywords and search engine optimization (SEO). Simply put, LSI assists search engines in identifying keywords in Web content and placing them in their proper context so that the results that they serve are more accurate.

LSI-Driven Keyword Research Benefits

The intent of search engines like Google is to deliver content that is most relevant to the queries of its users. However, given the vastness of the Internet, even sophisticated and fast search engines like Google find it difficult to determine what the Web page content is about. Sites that make it easy for it to understand the content with LSI keywords are therefore invariably rewarded with superior rankings and traffic. Apart from direct SEO benefits, LSIs help publishers and marketers categorize content better so that not only the content is delivered to the right audiences but also the level of engagement with them is enhanced. Users too benefit a lot because they can get answers to their queries far faster.

How to Find LSI Keywords

  • Searching Google: One of the simplest methods of identifying LSI keywords is to enter a search term in the Google search box and the search engine automatically displays the most relevant keywords associated with that query at the very end of the search results page. These suggestions can be used as a starting point for generating more potential LSI keywords because it clearly shows the associations Google is making with your primary keywords.
  • Using Google AdWords Keyword Planner: Entering your search term into the query box and clicking on the “Get Ideas” link gets you redirected to another page. You can get suggestions on keywords that are related. SEO service agencies use the tools to get an idea of how competitive the term is in ranking.
  • LSIGraph: This is yet another free tool that uses your search term input to generate a list of keywords that are related to it.
  • Ubersuggest: This free tool is also very handy for generating a list of appropriately relevant search terms just by inserting your primary query. The tool promises to uncover many search terms that Google’s tool does not seem to be able to discover.

Selecting the Most Effective LSI Keywords

Even though you have generated a large list of LSI keywords with the help of the tools, it is quite evident that you will not be able to use most of

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them in your content. Therefore, it is imperative that you refine the list to the relatively few that represent your best option to let users discover your content as well as ensure a reasonable volume of search. To generate a more refined list, you need to understand the different intent types of the user so that they are able to access the most relevant and useful content. The intent could be finding broad information about a subject, something more specific within that subject or a desire to carry out a transaction with respect to something about that subject.

Remain True to the Context of the Query

LSI keywords are only useful if they possess a very high degree of relevance to the content. However, even if you are desperate to reach out to the target audience in the quickest manner possible, there is no point in stuffing your content with LSI keywords. The keywords need to be inserted in a very natural manner and the content should not sound inept. If the keyword cannot be used in a natural way, it is better to leave it out.


It needs to be appreciated that LSI keywords are just only one component of an effective SEO strategy. For your website to rank consistently high on the search results page, you will also need to implement a detailed SEO strategy that will include rich original content, a large number of backlinks from sites with authority, alt tags and H1 tags that are pertinent and well structured, among others.

About the Author

Mandy Bular is the CEO of an SEO service agency that specializes in optimizing websites of the not-for-profit sector. Mandy blogs regularly on keyword research and other trending SEO issues.

Edited by Alicia Young

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