Monday, August 30, 2010

The Canonical URL tag

Yahoo!, Bing & Google all support the "canonical url tag" with the aim to assist webmasters and site owners eliminate self-created duplicate content in the index.
The tag is part of the HTML header on the web page:
<link rel="canonical" href=http://www.yoursite.com/page>

This would tell Yahoo!, Bing & Google that the page in question should be treated as though it were a copy of the URL www.yoursite.com/page and that all of the link & content metrics the engines apply should technically flow back to that URL.