Great insights from an internal Google meeting about Canonical and Hreflang in regards of Multinational and multilingual sites. Webmaster Central office hours about multinational and multilingual sites
Google rolled out a solution for the problem that multiple language sites started facing due to Panda filter. This key was in the form of ‘hreflang’ and ‘canonical’ tags. This is Google’s way of telling site owners that they should use a regional subtag in their head tag for the website URL.