domain names and google

[Sleep[Walker]]

Of course there are a lot of other SEO factors that need to be taken into count here. But i didn't say that the hyphenated domain names can't be rated high. It just can cause mysterious difficulties. But if you work hard, have an old google-trusted domain updated every day and... you understand what i mean.
Nevertheless, in some cases i can't understand people who register hyphenated domain name, when it is so simple to choose the same name excluding hyphens.