How to get Google Search to link to a Query String for your page when no physical page Exist.

I notice when I do a google search for some keywords I get back some website hits that do not link to a physical page but instead redirect me to their search page with my google search terms pre-populated.

For instance if I search "visualforce component blog" One of the google results is http://blog.jeffdouglas.com/?s=visualforce+component+blog

How do I do this? Make the google search result link to a query string (dymanic search on my page) Is it via a siteMap entry ? Or something else?