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[link-relations] NEW RELATION REQUEST: canonical

Ed Summers <ehs@pobox.com> Mon, 15 November 2010 02:33 UTC

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From: Ed Summers <ehs@pobox.com>
To: link-relations@ietf.org
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Subject: [link-relations] NEW RELATION REQUEST: canonical
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Relation Name:
canonical

Description:
A canonical page is the preferred version of a set of pages with
highly similar content.

Reference:
http://www.google.com/support/webmasters/bin/answer.py?hl=en&answer=139394

Notes:
This relation is used by web crawlers to prefer a particular URI when
multiple URIs are available for similar content. For example, when a
URL contains a tracking number or sort parameters.

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