D

De-listing -

This means that your website has been removed from a search engine's index. There may be several possible reasons for this, including extended downtime and techniques perceived by search engines as spam.

Dead Link -

A link to a page that does not exist, probably because the page no longer exists, the page has moved, or the server is down. A dead link leads to a '404 error page.

Description -

HTML terminology. This is descriptive text which concisely explains the purpose of a page. A meta tag exists for this, and is used by some search engines for displaying the page in SERPs.

Directory -

A website that categorises other websites. Such sites are usually manually compiled, depending on user submissions.

DMOZ -

Also known as Open Directory Project. This is a very large directory run by volunteers. This database is used by many search engines on the internet. We recommend you consider listing your business in DMOZ

Doorway Page -

An optimised page submitted to search engines in order to rank high for very specific keywords. A doorway page generally has little or no text except for the optimised text and adds little value to the visitor of the website.

With the rise of link popularity as an integral part in ranking algorithms, this technique has become redundant. Such practice is considered spam by most search engines.

Dynamic Page (or Content) -

This is a webpage that changes its content depending on database information or user settings. A scripting language such as PHP or ASP is usually used to bring about such a result. Search engines are now advanced enough to index such pages.