Did you know that the search engines are driven by Latent Semantic Indexing. That these words are about how you organise your website ? And that the PR of your site doesn’t determine the position you attain in the sear engine results.
If you are interested in learning more, I recommand the following free pdf:
http://www.themematic.com/themasterplanprimer.pdf and to buy the product for 67$ and see the video at http://www.seo2020.com/tmp-launch.html
Also to create a site map and find errors in my description tags I use http://www.sitemapdoc.com/Default.aspx
Hope this helps you
