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Does the url name have any effect in raising your position on SE?
if you sell cat toys..
would www.cat-toys.com get a better result than www.cattoys.com? how would www.kittycattoys.com compare to it?
The most important factor still remains to be content and good naming. But I would say 5% of your score is name.
Artificial Intelligence (AI) can read a two word compound word very easy. So non-hyphen domains are preferred. But when you get above two words you begin to get into more complex AI. So hyphens may pay off until the engines get more complex.
If you can I would register cattoys.com, then cat-toys.com, and then kittycattoys.com.