12. The method as in claim 1 further comprising: utilizing the statistical information to identify a corresponding set of at least one most representative text-based term for each page of multiple pages in the document; and for each of the multiple pages, utilizing the corresponding set of at least one most representative text-based terms to identify a theme associated with a respective page that enables matching of a highly relevant advertisement with the respective page.
13. The method as in claim 12 , wherein utilizing the corresponding set of at least one most representative text-based term to identify the theme associated with the respective page includes: identifying a most representative text-based term for the respective page; searching the listing of multiple themes to identify a corresponding theme in the listing that includes the most representative text-based term for the respective page; and assigning the corresponding theme in the listing that includes the most representative text-based term for the respective page to be the corresponding theme for the respective page.