Keywords are the defining element of SEO.
They help people find what they’re looking for when they perform a search — which is why you want to make sure your site is properly optimized for your best keywords.
… But will keywords always be the focus of SEO? Probably not.
Even now, the search engines place a lot of importance on the words that surround the keywords on your site. It’s not enough for you to have your best keywords embedded in strategic locations on your site. The rest of your content also has to be relevant.
Latent Semantic Indexing
For example, if you sell a diabetes cookbook and your top keyword is “healthy recipes for diabetics,” you need to optimize your site for that keyword.
… But you also need to make sure your content includes other related words and phrases, such as:
- diabetes
- cookbook
- healthy eating
- insulin
- glucose
- blood sugar
- diabetes management targets
- nutritional requirements
- carbohydrates
… and so on.
Some of these terms, such as “carbohydrates,” and “healthy eating,” aren’t specific to “healthy recipes for diabetics” at all… yet they’re terms the search engines want to find on a site that’s optimized for that keyword. They are a sign that the content on the site is relevant and useful.
… And that’s what the search engines are in the business of providing: USEFUL information to their users.
This focus on related terms is called “latent semantic indexing.” That’s just a fancy term describing how a computer determines the meaning of a body of words by looking at the relationships between those words. Instead of looking at the words and phrases individually, they look at the content as a whole.
Right now, search engines aren’t yet able to employ true latent semantic indexing– with all the information on the Internet, this job is enormously complicated! But that’s the goal they’re working toward. And when they reach that goal, your individual keywords won’t be nearly as important as the depth and breadth of your content as a whole.
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