Information about Web Directory
A web directory or link directory is a directory on the World Wide Web. It specializes in linking to other web sites and categorizing those links.
A web directory is not a search engine, and does not display lists of web pages based on keywords, instead it lists web sites by category and subcategory. The categorization is usually based on the whole web site, rather than one page or a set of keywords, and sites are often limited to inclusion in only one or two categories. Web directories often allow site owners to directly submit their site for inclusion, and have editors review submissions for fitness.
RSS directories are similar to web directories, but contain collections of RSS feeds, instead of links to web sites.
Examples of well known, general, web directories are Yahoo! Directory and the Open Directory Project (ODP). ODP is significant due to its extensive categorization and large number of listings and its free availability for use by other directories and search engines. [1]
A debate over the quality of directories and databases continues, as search engines use ODP's content without real integration, and some experiment using clustering. There have been many attempts to make directory development easier, whether using a "links for all" type link submission site using a script, or any number of available PHP portals and programs. Recently, social software techniques have spawned new efforts of categorization, with Amazon.com adding tagging to their product pages.
Directories have various types of listings, often dependent upon the price paid for inclusion:
Human-edited directories are often targeted by SEOs on the basis that links from reputable sources will improve rankings in the major search engines. Some directories may prevent search engines from rating a displayed link by using redirects, nofollow attributes, or other techniques.
Many human-edited directories, including the Open Directory Project and the World Wide Web Virtual Library, are edited by volunteers, who are often experts in particular categories. These directories are sometimes criticized due to long delays in approving submissions, or for rigid organizational structures and disputes among volunteer editors.
In response to these criticisms, some volunteer-edited directories have adopted wiki technology, to allow broader community participation in editing the directory (at the risk of introducing lower-quality, less objective entries).
Another direction taken by some web directories is the paid for inclusion model. This method enables the directory to offer timely inclusion for submissions and generally fewer listings as a result of the paid model. They often offer additional listing options to further enhance listings, including features listings and additional links to inner pages of the listed web site. These options typically have an additional fee associated, but offer significant help and visibility to sites and/or their inside pages.
Today submission of websites to web directories is considered as a common SEO (search engine optimization) technique to get vital back-links for the submitted web site. One distinctive feature of 'directory submission' is that it can not be fully automated like search engine submissions. Manual directory submission is a tedious and time consuming job and is often outsourced by the webmasters.
A web directory is not a search engine, and does not display lists of web pages based on keywords, instead it lists web sites by category and subcategory. The categorization is usually based on the whole web site, rather than one page or a set of keywords, and sites are often limited to inclusion in only one or two categories. Web directories often allow site owners to directly submit their site for inclusion, and have editors review submissions for fitness.
RSS directories are similar to web directories, but contain collections of RSS feeds, instead of links to web sites.
General
Some directories are very general in scope and list websites across a wide range of categories, regions and languages. But there are also a large number of niche directories, which focus on restricted regions, single languages, or specialist sectors.Examples of well known, general, web directories are Yahoo! Directory and the Open Directory Project (ODP). ODP is significant due to its extensive categorization and large number of listings and its free availability for use by other directories and search engines. [1]
A debate over the quality of directories and databases continues, as search engines use ODP's content without real integration, and some experiment using clustering. There have been many attempts to make directory development easier, whether using a "links for all" type link submission site using a script, or any number of available PHP portals and programs. Recently, social software techniques have spawned new efforts of categorization, with Amazon.com adding tagging to their product pages.
Directories have various types of listings, often dependent upon the price paid for inclusion:
- Free Submission - there is no charge for the review and listing of the site
- Reciprocal Link - a link back to the directory must be added somewhere on the submitted site in order to get listed in the directory
- Paid Submissions - a one-time or recurring fee is charged for reviewing/listing the submitted link
- No Follow - there is a rel="nofollow" attribute associated with the link, meaning search engines will not follow the link.
- Featured Listing - the link is given a premium position in a category (or multiple categories) or other sections of the directory, such as the homepage
- Bid for Position - where sites are ordered based on bids
- Affiliate links - where the directory earns commission for referred customers from the listed websites
Human-edited directories
A human-edited directory is created and maintained by editors who add links based on the policies particular to that directory.Human-edited directories are often targeted by SEOs on the basis that links from reputable sources will improve rankings in the major search engines. Some directories may prevent search engines from rating a displayed link by using redirects, nofollow attributes, or other techniques.
Many human-edited directories, including the Open Directory Project and the World Wide Web Virtual Library, are edited by volunteers, who are often experts in particular categories. These directories are sometimes criticized due to long delays in approving submissions, or for rigid organizational structures and disputes among volunteer editors.
In response to these criticisms, some volunteer-edited directories have adopted wiki technology, to allow broader community participation in editing the directory (at the risk of introducing lower-quality, less objective entries).
Another direction taken by some web directories is the paid for inclusion model. This method enables the directory to offer timely inclusion for submissions and generally fewer listings as a result of the paid model. They often offer additional listing options to further enhance listings, including features listings and additional links to inner pages of the listed web site. These options typically have an additional fee associated, but offer significant help and visibility to sites and/or their inside pages.
Today submission of websites to web directories is considered as a common SEO (search engine optimization) technique to get vital back-links for the submitted web site. One distinctive feature of 'directory submission' is that it can not be fully automated like search engine submissions. Manual directory submission is a tedious and time consuming job and is often outsourced by the webmasters.
See also
References
1. ^ Paul Festa (December 27, 1999), Web search results still have human touch, CNET News.com, retrieved September 18, 2007
The word directory is used in computing and telephony meaning a repository or database of information. A directory, as opposed to a conventional database, is heavily optimized for reading, with the assumption that data updates are very rare compared to data reads.
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World Wide Web (commonly shortened to the Web) is a system of interlinked, hypertext documents accessed via the Internet. With a web browser, a user views web pages that may contain text, images, videos, and other multimedia and navigates between them using hyperlinks.
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A hyperlink, is a reference or navigation element in a document to another section of the same document or to another document that may be on a different website.
Hyperlinks are part of the foundation of the World Wide Web created by Tim Berners-Lee, but are not limited to
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Hyperlinks are part of the foundation of the World Wide Web created by Tim Berners-Lee, but are not limited to
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A website (alternatively, Web site or web site) is a collection of Web pages, images, videos or other digital assets that is hosted on one or several Web server(s), usually accessible via the Internet, cell phone or a LAN.
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Categorization is the process in which ideas and objects are recognized, differentiated and understood. Categorization implies that objects are grouped into categories, usually for some specific purpose.
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search engine is an information retrieval system designed to help find information stored on a computer system. Search engines help to minimize the time required to find information and the amount of information which must be consulted, akin to other techniques for managing
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A keyword (also index term or descriptor) in Information Retrieval is a term that captures the essence of the topic of a document or a search query. When a descriptor is descriptive, it can be an effective search parameter.
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RSS
Screenshot of an RSS feed as seen in Mozilla Thunderbird
File extension:
MIME type:
Extended from: XML
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Screenshot of an RSS feed as seen in Mozilla Thunderbird
File extension:
.rss, .xmlMIME type:
application/rss+xml (Registration Being Prepared)[1]Extended from: XML
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Yahoo! Directory is a web directory which rivals the Open Directory Project in size. The directory was Yahoo!'s first offering. When Yahoo! changed to crawler-based listings for its main results in October 2002, the human-edited directory's significance dropped, but it is still
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Open Directory Project (ODP), also known as dmoz (from directory.mozilla.org, its original domain name), is a multilingual open content directory of World Wide Web links owned by Netscape that is constructed and maintained by a community of volunteer editors.
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Open content, coined by analogy with "open source", describes any kind of creative work (including articles, pictures, audio, and ) or engineering work (i.e. open machine design) that is published in a format that explicitly allows the copying and the modifying of the information
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Clustering is the classification of objects into different groups, or more precisely, the partitioning of a data set into subsets (clusters), so that the data in each subset (ideally) share some common trait - often proximity according to some defined distance measure.
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PHP
Paradigm: imperative, object-oriented
Appeared in: 1995
Designed by: Rasmus Lerdorf
Developer: The PHP Group
Latest release: 5.2.4/ 30 August 2007
Typing discipline: Dynamic, weak (duck typing)
Influenced by: C, Perl
Java, C++, Python
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Paradigm: imperative, object-oriented
Appeared in: 1995
Designed by: Rasmus Lerdorf
Developer: The PHP Group
Latest release: 5.2.4/ 30 August 2007
Typing discipline: Dynamic, weak (duck typing)
Influenced by: C, Perl
Java, C++, Python
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This article or section may contain original research or unverified claims.
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This article has been tagged since September 2007.
This article has been tagged since September 2007.
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Amazon.com, Inc. (NASDAQ: AMZN ) is an American e-commerce company based in Seattle, Washington. It was one of the first major companies to sell goods over the Internet and was one of the iconic stocks of the late 1990s dot-com bubble.
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tag is a (relevant) keyword or term associated with or assigned to a piece of information (e.g. a picture, a geographic map, a blog entry, or video clip), thus describing the item and enabling keyword-based classification and search of information.
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Affiliate marketing is a method of promoting web businesses (merchants/advertisers) in which an affiliate (publisher) is rewarded for every visitor, subscriber, customer, and/or sale provided through his/her efforts.
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Search engine optimization (SEO) is the process of improving the volume and quality of traffic to a web site from search engines via "natural" ("organic" or "algorithmic") search results.
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search engine is an information retrieval system designed to help find information stored on a computer system. Search engines help to minimize the time required to find information and the amount of information which must be consulted, akin to other techniques for managing
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nofollow is a non-standard HTML attribute value used to instruct search engines that a hyperlink should not influence the link target's ranking in the search engine's index.
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Open Directory Project (ODP), also known as dmoz (from directory.mozilla.org, its original domain name), is a multilingual open content directory of World Wide Web links owned by Netscape that is constructed and maintained by a community of volunteer editors.
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The World Wide Web Virtual Library was the first index of content on the World Wide Web and still operates as a directory of e-texts and information sources on the web. It was started by Tim Berners-Lee, the creator of HTML and the Web itself, in 1991 at CERN in Geneva.
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A web directory is a listing of websites organized in a hierarchy or interconnected list of categories.
The following is a list of web directory services for which Wikipedia has articles.
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The following is a list of web directory services for which Wikipedia has articles.
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This article is copied from an article on Wikipedia.org - the free encyclopedia created and edited by online user community. The text was not checked or edited by anyone on our staff. Although the vast majority of the wikipedia encyclopedia articles provide accurate and timely information please do not assume the accuracy of any particular article. This article is distributed under the terms of GNU Free Documentation License.
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