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:
They were registered seconds apart and in order as above using same whois information and custom name servers:
Both domains were hosted on a different IP of the same C-block.