Simon Willison’s Weblog

14th February 2009 - Link Blog

Specify your canonical. You can now use a link rel=“canonical” to tell Google that a page has a canonical URL elsewhere. I’ve run in to this problem a bunch of times—in some sites it really does make sense to have the same content shown in two different places—and this seems like a neat solution that could apply to much more than just metadata for external search engines.