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SEO Glossary

An ever-growing glossary of SEO Jargon

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Open Directory Project

("DMOZ" redirects here)

The Open Directory Project (ODP), also known as DMOZ, is a multilingual, volunteer-edited web directory. The Open Directory Project is the largest, human-edited directory on the Web.

History of the Open Directory Project

Originally named Gnuhoo by its original developers at launch in 1998, the directory was acquired later that same year by Netscape Communications Corp (now owned by AOL) and renamed to the Open Directory Project. The initial domain name of the ODP was directory.mozilla.org, hence its alternate name, DMOZ.

DMOZ and Search Engine Optimization

Getting listed in the ODP has traditionally been high on search engine optimization to-do lists because of the directory's trust and authority. DMOZ's free licensing under the Creative Commons agreement has resulted in the creation of hundreds of web directories powered by its database, all of which could offer a potential backlink from a single submission approval.

Decline in Popularity

In 2006, the Open Directory Project suffered from major hardware problems which lasted three months. During this period, no new submissions were accepted, and increasing frustration and criticism mounted towards the ODP's inefficiency in general.

The wait time for website approval, which was originally a matter of weeks, has gone to years (or never) in many cases, often without explanation from editors.

A listing in DMOZ is far from the SEO panacea it was once considered; however, it undoubtedly offers some value, so submit your site, hope for the best, and move on.

See also: Web directory Top
Open Site Explorer

Open Site Explorer (OSE) is a link data tool offered by Moz (formerly SEOMoz), that analyzes the authority and trust of Billions of websites across the web. It is a popular keyword research tool used for search engine optimization.

OSE is powered by Moz's Mozscape index and API, which provides insights into the ranking potential of domains and web pages, and offers metrics such as MozRank, MozTrust, Domain Authority, and Page Authority.

Organic results
See Organic search Top

("Natural listings" and "organic results" redirects here)

Organic search results are listings that search engines return based on their relevance to entered search terms. Opposed to pay-per-click (PPC) results, organic listings are generated by sophisticated algorithms that consider numerous ranking signals.

Google, Bing, and Yahoo include different types of results in their organic, including Web pages, images, videos, news, and maps.

Searchers generally have more faith in the quality and relevance of organic results over PPC; consequently, the overwhelming majority of search engine result clicks are organic.

See also: Search engine results page Top

("External link" redirects here)

An outbound, or external link is a hyperlink from one web page to another one outside its domain. Links between pages or resources within the same domain are internal links.

Outbound links can enrich the value of web content by helping visitors find relevant information, and earn the website credibility.

Benefits of Outbound Links on SEO

  • Gain credibility: Linking to authoritative sources of relevant content can support your claims
  • Build relationships: Outbound links help get you noticed by those who you link to
  • Earn incoming links: Owners of sites you link to might return the favour

Best Practices

  • Link to quality content: Where a website links to can reflect on its trust, credibility, and rankings. Avoid linking to low quality content
  • Don't link hoard: Don't hesitate to link out for fear of losing link equity or visitors. Linking to relevant content is helpful to visitors, and can actually help rankings
  • Use descriptive anchor text: Descriptive anchor text gives visitors insight into where a link will lead them
  • Cite sources: When referencing or quoting content from another site, cite your sources with a link
  • Moderate: In situations where you don't have editorial control over outbound links, as with blog comments, use nofollow rel attributes to prevent penalties associated with linking to spammy content
See also: Backlink Top
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