Latent Semantic Analysis

photo courtesy BJN

When a person searches for “Kentucky fried chicken“, Google’s primary goal is to try to understand whether you’re in Kentucky looking for fried chicken or in New Jersey (like I am) looking for the local KFC. In a nutshell, that’s an example of how a searcher’s environment… their associations and place in the world give context to the search that’s taking place.

With that goal firmly in their sights, Google has helped move us from the world where rankings are driven by keyword density to one where context is king. They are looking for cues of what the searcher (you and I) is really looking for when they search for Kentucky fried chicken. Take that same kind of richness of context and apply it to the text itself on your website. It has become increasingly important to ensure your website’s copy not only addresses your visitors’ core search, but their motivations and environment as well. What do I mean? In a simple example, when a person is interested in immigration, they also are likely to have questions or ideas about becoming a citizen, the naturalization process, getting a green card… legally, work in the US, visas, worker status, help and more. For both your user and your search engine rankings, this sort of in-depth understanding of the words and concepts related to your topic is key as we move into 2010 and 2011.

Great, Clay. You’ve proven you’re a nerd and like tangents (like Google does???). How can you put this sort of Latent Semantic Analysis (“LSA”) to work for me? I’ve found LSA is great for rankings but, more practically, it’s great for giving you ideas on where to go with your web content development. If you can tap in to the relationships and concepts associated with your topic, it makes it much easier to produce interesting copy that’s useful to your visitors.

Here’s how you can put LSA to work for you using “motorcycle accidents” as an example. Search for the phrase and note the first web URL they return that has good content on the landing page. Take that URL, copy it, and visit the Google Keyword Tool at https://adwords.google.com/select/KeywordToolExternal. Under “How would you like to generate keyword ideas?” select the Website content radio button. Paste the URL into the input box and check the “Include other pages on my site linked from this URL” checkbox. Click to search and Google will go out and gather LSA ideas for you! The results returned include grouped keywords centered around concepts.

The first URL returned is http://accident-law.freeadvice.com/auto/motorcycle_accident_statistics.htm. Analysis shows related concepts like personal injury, motorcycle helmets, safety, learning to ride, head on crash, motor bike crashes, etc. Note those LSA keywords.

Move on to another top URL returned by Google: http://www.vtwinmama.com/accident_survivors.htm. Using the Google Keyword Tool on this URL, we get more keyword concepts like Harley Davidson, motorcycle safety, leather motorcycle jacket, motorcycle class and more. Each URL you research will return variants that are often useful. Of course, there is a lot of repetition of concepts like motorcycle accident attorneys and motorcycle safety but there are always gems in the results.

Thoughts?

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