guardian/frontend-common — pull request #9 by gklopper (2012-04-26 10:02:09+00:00)
Title: Added canonical url to meta data for SEO purposes.

Basically we are creating a copy of guardian.co.uk content on a different url. We need to be explicit about this so we do not harm our search results.

see http://googlewebmastercentral.blogspot.co.uk/2009/02/specify-your-canonical.html