When you use the tag, you can indicate the canonical URL form for crawlers to use for each page of content, no matter how it was retrieved. This puts the preferred URL form with the content so that it is always available to the crawler, no matter which session id, link parameter, sort parameter, parameter order, or other source of variance is present in the URL form used to access the page.
To do this, specify a tag in the
section of your page content:<link rel=”canonical” href=”http://www.seous.com/services” />
The above tag indicates to the crawler that the URL it is present on should be represented canonically as http://www.seous.com/services. This would eliminate the following duplicates:
http://www.seous.com/services?trackingid=feed
http://www.seous.com/services?sessionid=hgjkeor2
http://www.seous.com/services?printable=yes&trackingid=footer
