rel canonical - new google/yahoo tag for duplicate content

[yesterday]

rel canonical
use this tag to indicate which page on your site is the one with the main content if you've got two urls pointing to the same page
put < a href="etc" rel="canonical"> on the page that isn't the main one but points to the main one.

yesterday

 

[retired_member13]

It's not that new - Matt Cutts of Google blogged / video-blogged about this back in February 2009...

Learn about the Canonical Link Element in 5 minutes

Regards