Google Secrets glossary for SEO, search engine optimization, ranking & web traffic

Google Secrets SEO Glossary - D

The following terms are used in Google Secrets and cover the spectrum of search engine optimization (SEO) - from keywords to meta tags to PageRank to link popularity to web traffic.

Deep crawl. Deep crawls are performed once a month by the main Google spider Googlebot; all pages of a site are visited during a deep crawl. Also known as the main crawl.

Directory. As opposed to search engines, search directories use humans to review and place websites in alphabetical order under defined categories and sub-categories. The best-known directories are Yahoo! and the Open Directory Project (OPD).

DMOZ. Another term for the Open Directory Project.