Google was granted an updated version of a patent this week that looks at how the search engine might use directories in URL structures to help it better understand the categories on a Web site, and to categorize new pages and directories that might be added to a site. The patent tells us that this might enable the search engine to add supplemental information to pages, such as advertisements that fall within the categories displayed upon the site.
Some other patents I’ve written about in the past shows that the search engines might be doing more with categories than just deciding upon which ads to show on a page
Imagine that you have a site about car parts, and you decided to organize the pages of the site first by car make, so the main categories on your site are different brands, and your second level of directories is organized by car models. You might then have sub-sub-categories that are organized by different systems within cars, such as “electrical,” “transmission,” “cooling,” “suspension,” and so on. URLs for a couple of your pages might look like: