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How can I link subdomains to my main domain to get the SEO benefit? I've seen examples using all sorts of clever redirects and PHP where you get the subdomain's content on the main site...but what I want is for the subdomain to be linked with the main domain; I don't mind it sitting by itself, but I'd just like to get the SEO benefit of it. I'm aware that Google see subdomains as separate domains but can change / help them to be seen more as one site?

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Subdomains are not seen as separate domains. –  John Conde Jul 11 '12 at 17:51
really ? does it not see them as separate domains on a backlink level ie. if i get a link to my sub domain it wont benefit the main domain.. –  sam Jul 11 '12 at 18:10
All links benefit the page they are linking to, but a subdomain is considered to be part of the main domain/website. –  John Conde Jul 11 '12 at 18:29

3 Answers 3

Since March 2014 Google no longer sees subdomains as part of the main domain. Essentially they treat each subdomain as a seperate website. As far as I know you can't get the SEO benefits of your subdomains to your main domain, other than having some referring links between them.

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It will be regarded as cheat by search engine that if the same site has various subdomains.

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For example Wikipedia... –  milo5b Jul 12 '12 at 20:25

You have to just create hyperlink with your keyword in sub domain page and give link of main page. You must have to keep limit up to 1-2 links from sub domain to main page because more linking seems spamming and it will definitely detect by Search engine.

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