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SEO Glossary

An ever-growing glossary of SEO Jargon

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SEO Glossary » r

Ranking signal

A ranking signal or ranking factor is any characteristic of a website that search engine algorithms might consider to calculate its rankings.

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Rankings
See Search engine results page Top

("Two-way link" and "link exchange" redirects here)

A reciprocal link is a mutual hyperlink between two websites. Reciprocal linking can occur unintentionally between websites of related content, or from mutual agreement by site owners attempting to boost their respective traffic and search engine rankings.

Reciprocal links are a normal part of a natural, diverse link profile; however, exchanging links with other websites should only be considered if site visitors will likely be interested by their content. Excessive reciprocal linking—especially will unrelated, lower quality sites—can alert search engines to a manipulative link scheme.

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Redirect
See URL redirection Top
Registrar
See Domain name registrar Top
Relevance
See Topical relevance Top
Responsive web design

Responsive web design is an approach to web development that provides an optimal user-experience, regardless of screen size.

Responsive websites are built with a single version of content that adapts to various resolutions and user-devices—from large monitors to smart phones with widths as narrow as 320 pixels—using CSS3 media queries.

Responsive website on various devices Responsive website on various devices

Responsive Web Design and SEO

Responsive design is Google's recommended method of mobile-friendly site development.

Benefits of Responsive Web Design

  • Web pages that adapt to different screen resolutions
  • A single URL exists for each web page, regardless of user-device, making it easier to share and link to content
  • Websites can be crawled and indexed more efficiently with one version of content

Disadvantages of Responsive Web Design

  • Responsive design can slow page load speeds
  • Desktop and mobile visitors aren't always looking for the same type of content

External Links

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Robot
See Web crawler Top
Robots meta tag
See Meta Robots attribute Top
Robots-NoContent (Class attribute)

The Robots-NoContent attribute was introduced by Yahoo! in 2007 to help webmasters keep sections of a web pages's content out of Yahoo!'s search engine. The robots-nocontent value added as a class to an HTML element on a web page will instruct the Yahoo! crawler to exclude it from its index.

Robots-NoContent Examples

<div class="robots-nocontent">This will be excluded from Yahoo's index</div>
								
<span class="robots-nocontent">This will be excluded from Yahoo's index</span>

<p class="robots-nocontent">This will be excluded from Yahoo's index</p>

As of 2013, the Robots-NoContent attribute is still only recognized by Yahoo. To prevent Google, Bing, and other search engines from indexing content, the NoIndex Meta Robots attribute is available, but at the page-level only.

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Robots.txt

Robots.txt is an optional web server file, used to prevent search engine robots and other web crawlers from accessing all or part of a website. The Robot Exclusion Standard is not enforceable; however, most respectable robots will respect the directives in a robots.txt file.

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