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.

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.
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