It has been my experience that subdirectories are better to use than subdomains.

Subdomains are better to use if you have a great homepage filled with content and still enough room to make a subdomain. It's better to use them as if you're building a new site. Like mtv.com and dance.mtv.com. MTV.com is dedicated to everything MTV. Dance.MTV.com is dedicated to everything about America's Best Dance Crew, a show on MTV, and it has their own pages. Promoting a subdomain for SERPs, etc. would be like promoting a whole other site.

When I use subdirectories instead, I get better SERPs results just by using a unique first paragraph of content, header tag, and title tag/description/keywords tags.

Think of it like this: Would you rather be promoting a site or a page?

What has been your results when using subdomains and subdirectories?

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Jerlene
DNLodge.com
manual Directory Submission Service

On our site we use the 3 click rule, meaning you can get to any content on the site in 3 clicks or less. This helps users and bots.

I agree with you completely about the 3-click rule. When I built and ran my first site, I went for impressions, regardless of user experience. The site did well at first and I even sold it for a great profit but the performance steadily went down and is still going down I believe. User experience is the key to longevity on the web I believe.

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