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http://www.my-french-house.com/ has been online since around 2004 and has nearly always been in the top 10 serps for terms like 'property for sale in france'. However, over the last 12 months we've been hit really hard by Google and have fallen dramatically in rank. Can anyone give any insight into what may have happened? As an aside, we've had no message in the Google Webmaster Console and have not contacted Google about the apparent penalty / penalization. Any help or advice would be greatly appreciated. Cheers Jim

Very general question really, but does anyone know whether Google sees html5 pages as being superior in any way to xhtml or html 4.x pages?