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I've decided to use sub folders for my site, and from everything I've read online it seems I shouldn't change the page content depending on IP, yet I know of a successful well funded site that hires full time SEO staff that does just that, and I'm wondering whether they know something I don’t which is helping their SEO. From everything I've read online this is the format I think I should use: mysite.com/us/red-wigs mysite.com/gb/red-wigs mysite.com/red-wigs does not exist This is the format the other site is using: othersite.com/red-wigs (from US IP address) othersite.com/red-wigs (from UK IP address) othersite.com/gb/red-wigs The content on othersite.com/red-wigs is identical to othersite.com/gb/red-wigs when loading from a UK IP address, and a lot of URLs without /gb/ are being returned when searching google. The benefit I can think of that they are gaining is US pages which are being returned for UK based searches will return the correct content. Are their any other gains to this approach? I'm concerned that if I use this approach for different languages then the radically differing content of othersite.com/red-wigs depending on the location of the crawler might confuse google - also generally changing content depending on IP seems to be recommended against. Thanks