Should I structure my site using subdomains or subdirectories?

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Published on Oct 31, 2012 by

I'm interested in finding out how Google currently views subdomains -- whether there's any difference between a site structured as a group of subdomains and one structured as a group of subdirectories.
Bob, Somerville, MA

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Top Comments

  • Good question, good answer! Thanks :)

  • Subdomans can also be easier – just imagine having greedy "complicated" regular expression in a mod_rewrite declaration. Re-writing that to work with subdirectories could be harder than adding a subdomain.

All Comments (26) see all

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  • subdirectories make me happier :)

  • Thank you for this video.

  • Awesome, Google found a way to eliminate more spammers. Get em Google. Never have been a big fan of sub-domain usage but it is a powerful way to generate more results.

  • Nobody, YOU shouldn't listen to me. I have no desire to share knowledge with those who don't want it.

  • How about we turn that question around...who the F are you and why the F should anyone care what you think?

  • Though depending on your use case, you might have to configure your php.ini for allowing sessions across all sub-domains + ajax doesn't work cross-domain due to the same-origin policy. So I guess it's also a matter of trade-offs outside the realm of seo.

  • yes, many websites that avail themselves of free services are devalued by search engines because of the high incidences of low quality web sites. Google's own blogger and blogspot come with an almost insurmountable penalty for instance.

  • no difference where it's hosted.

  • Now THAT's a good question. The answer is no, no extra link juice for sub domains any longer.

    You shouldn't take my word for it though, you should apply some scientific research to the question. There are lots of liars in SEO, especially the SE's themselves and any 3rd party that gets anything (like exclusive interviews or quest speakers at their events) from them.

  • Why would you ask this guy? Who the F cares what he thinks? Notice he wasn't able to answer the question properly.

    He couldn't (or wouldn't) even answer the part about Google correctly, blaming the flaws in their system "abuse" by Webmasters...

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