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My company is moving forward with creating a subdomain for mobile visitors (m.examplesite.com). I know there is much discussion on subdomain vs one url with different style sheets.  That ship has sailed and the subdomain is the way we are proceeding. Google appears to recommend leaving both sites open to the normal Googlebot and redirecting the mobile bot to the mobile site (as we will be redirecting mobile visitors to the mobile subdomain). Has anyone had experience with this.  Any duplicate content issues? Does anyone feel strongly that the normal Googlebot should be blocked from the mobile site (this seems to go against Google's recommendations)? It seems like another option is to use the canonical tag and let the search engines know the traditional site is the canonical page/version. Any recommendations?  Any other issues that should be considered?