Domain Hyphenation Test

 
 

There has been much talk about domain hyphenation with Google’s response vague as usual. Dejan SEO team put this to test and in conclusion non-hyphenated domains have an advantage over hyphenated ones. For test specifics and results read on.

Update

Results of this test were published on SEOMoz on the 1 May 2011. The status of the ranking domain has changed since then in favour of the hyphenated domain. The advantage of this domain was the first position on the page. Since our test domains did not have their own title tag they inherited anchor text as their title. Notice the discrepancy between the title and the domain (love/loves) which does not seem to represent a problem and Google highlights both as a match in SERPs.

Domains Used

  • http://dejanseolovestesting.com/
  • http://dejan-seo-loves-testing.com/

Search Results

Linking Page

Dejan SEO Loves Testing

Here are the technical details of the setup:

Domain Registration & Hosting

We registered two domains:

  • keyword1keyword2keyword3keyword4.com
  • keyword1-keyword2-keyword3-keyword4.com

They were registered seconds apart and in order as above using same whois information and custom name servers:

  • ns1.keyword1keyword2keyword3keyword4.com
  • ns2.keyword1keyword2keyword3keyword4.com

and:

  • ns1.keyword1-keyword2-keyword3-keyword4.com
  • ns2.keyword1-keyword2-keyword3-keyword4.com

Both domains were hosted on a different IP of the same C-block.

Content

Both index pages contained only one line in the following format:

Did you know that keyword1keyword2keyword3keyword4.com
Did you know that keyword1-keyword2-keyword3-keyword4.com

No HTML.

Links

Both test domains were linked from the same page on another domain. In the source code of the linking page, the first link was the hyphenated one, giving it the initial (if any) advantage over the other.

Early Results

  • Day 1: Initial search brings up only dailychanges.com who picked up the domains.
  • Day 2: No change.
  • Day 3: Hyphenated domain is in the index, can be found below dailychanges.com
  • Day 4: Hyphenated domain is in cache, under dailychanges.com still
  • Day 5: Non-hyphenated domain enters Google index (found through alert), cached and ranking #1
  • After 3 months: Hyphenated domain gains position #1

Possible Undesired Influences

  • Non-linked references dailychanges.com
  • Nofollow references from dailychanges.com
  • Order of links in HTML of the linking page
  • Order of domain registration (seconds apart)
  • Discovery by Googlebot
  • Similarity of content

None of the above seem to have affected the test.

Dan Petrovic is a well-known Australian SEO and a managing director of Dejan SEO. He has published numerous research articles in the field of search engine optimisation and online marketing. Dan's work is highly regarded by the world-wide SEO community and featured on some of the most reputable websites in the industry.

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