Google and latent semantic analysis

Rumor in hunt engine forums has it that Google is gift more weight to latent semantic indexing (LSI) in its latest ranking algorithmic rule update.
What Is Latent Semantic Indexing?

LSI means that a hunt engine tries to associate certain terms with conception when indexing web pages. For illustration, Paris and Hilton are associated with a woman alternatively of a city and a hotel, Tiger and Woods are associated with golf.

Google has been using this conception to determine suitable ads for its AdSense service for some time now. It seems that Google is now also using this conception to improve the quality of its hunt results.

If you hunt for a keyword on Google and add a tilde ~ earlier the hunt term, then you get an idea of what Google thinks about a hunt term.

For illustration, if you do a semantic search for phone, Google returns Nokia as the first consequence. A convention search for phone returns different consequence. Adding a tilde to the hunt term seems to instruct Google to do a semantic search.
Why Is This Important To Your SEO Activities?

If Google uses this conception in its ranking algorithm (which is very probably) then its advisable that you don't focus on a single keyword, but on a set of related keywords with your hunt engine optimisation activities.

You should optimize some of the pages on your web site for keywords that are synonymous with the keyword you're targeting.

When you exchange links with other web sites, make sure that you vary the link text to your web site so that it contains different fluctuation and equivalent word of your keyword.
Where Can I Find Further Information About LSI?

If you're interested in the theories behind this conception, the followers pages can give you detailed information:

    * http://collared peccary.cet.middlebury.edu/lsa/out/lsa_definition.htm
    * http://lsi.research.telcordia.com/
    * http://research.microsoft.com/users/marycz/ht98.htm
    * http://www.cs.utk.edu/~lsi/papers/index.html

Latent semantic indexing helps search engines to find out what a web page is all about. It basically means to you that you shouldn't focus on a single keyword when optimizing your web pages and when getting links.

The web pages on your web site should be related and focus mainly on a special topic while using different words that describe the topic. Use variations of your keyword and synonyms. That makes it easier for search engines to determine the topic of your site.