| direct marketing | Direct marketing is when advert info is sent to customers directly. It could be through Telemarketing or sending direct cold emails to customers. |
| directory listing | see Citations. |
| absolute link | A link that uses the entire URL of a page instead of using a relative link path. Absolute URLs are preferred, as relative link paths can result in problems with canonicalization and hijacking. |
| null relevance | Noun phrase. The complete lack of internal or external factors that create a positive relevance score for a document in a search result in which the document is listed. |
| page load speed | the time it takes for a browser to download the first byte from a web server. |
