rankingCoach Glossary

Dead Link

If a link refers to a web page that no longer exists or web page content that no longer exists, it is referred to as a dead link. Causes for a dead link can be changes to the web page structure or a faulty source text coding. Dead links can negatively impact the ranking of a web page, because they hinder the detection of the website by a search engine. read full article

Deep Crawl

The phrase deep crawl is related to the term crawl and describes the process of a search engine examining web pages for their content and listing them accordingly in a directory. With deep crawl, the sub-pages are also analyzed accordingly as well as the deep links on a web page. An independent assessment and indexing of the individual sub-pages should take place using deep crawl. The PageRank and link popularity are used as criteria for the evaluation. read full article


Bots are divided into the categories of Freshbot and Deepbot. The Freshbot examines only new and current content, while the Deepbot updates already indexed pages. read full article

Deep Link

Deep links are internal links that refer directly to a sub-page, an article or certain files, etc. read full article


The deletion from the search results in the Google search engine is called de-listing. A reason for a delisting can be spamming for example. read full article


As a dynamic variant to HTML, DHTML refers to a method in web design. Through their own actions, web page visitors can change the display of a page. Examples of this are menus or texts that are pulled down when contacted with the mouse, which are highlighted by a "mouse-over." read full article


Dialers are computer programs that enable a connection from the computer to the Internet and other data networks via the analog or digital telephone network by means of a dial-up connection. Colloquially, the terms dialer, premium rate dialer or web dialer refer to programs that establish connections to 0900-9 numbers for a fee, which are then charged via the telephone bill. Dialer software that is installed undetected on a computer can (if the computer is connected to the Internet via the … read full article


The Internet address of a website is referred to as the domain. Each web page is assigned a domain name. If you enter this domain name in the address line of the browser, the web page will be accessed. A domain name is composed of several elements that are separated from each other by periods. The so-called top level domain is the domain ending, i.e. the last part of the Internet address. There are different domain endings to choose from depending on the homeland of the site operator and … read full article

Domain name

The URL (Uniform Resource Locator) is composed of individual domains. These are separated by a period and are structured hierarchically: The Fully Qualified Domain Name (FQDN) followed the sub-domain "www." Domain names are absolute addresses that characterize the organization or the company behind the website. The domain name is completed by the top level domain, such as with ".com" for most American sites or with ".de" for Germany for example. read full article

Domain Popularity

The domain popularity refers to the amount of links that link from various domains to a certain website. Unlike link popularity, only the domain is incorporated into the ranking. read full article

Doorway Page

The doorway page ("gateway page," "entry page," "bridge page," "ranking page" or "funnel page") is a web page that is specifically set up for search engines like Google and is optimized to relevant search terms. Doorway pages should direct traffic to the actual page through an automatic redirect. Google evaluates doorway pages as an attempted manipulation and BlackHat action. read full article

Dublin Core

Dublin Core is a type of meta data that is applied in the HTML code of a web page. The data can also appear as RDF / XML and belongs to the OpenDocument files. 15 "core elements" are listed below that belong to the "Dublin Core meta data element set" and are standardized with ISO 15836: identifier, format, type, title, subject, coverage, description, creator, publisher, contributor, rights, holder, rights, provenance, source, relation, audience, instructional method, and date. It is not … read full article

Duplicate Content

"Duplicate Content" is an essential concept of search engine optimization. Duplicate content (DC) occurs when multiple URL's have identical content, i.e. the same content appears under different addresses. Duplicate content harms the ranking of a page, because a page is therefore evaluated as spam and the ranking can be downgraded. read full article

Dynamic pages

Content management as well as blog systems use dynamic pages. The displayed web pages are thereby generated with the help of databases. This makes it possible to separate technical elements (scripts, templates, programming, etc.) from content (images, texts, etc.). When accessing the respective website, both of the areas are merged together. In addition to dynamic websites, there are also static websites. They consist of already composed files that are laid out ready on the server. Static pages … read full article


ODP stands for Open Directory Project and constitutes likely the largest web catalog in the world. The directory, for which every Internet user can propose entries, is serviced by a large number of free editors. The entry of your own site has a positive effect on the ranking, because many search engines access the ODP database. In addition, your own site is linked with the ODP as well as with other sites that pick up the ODP database. read full article