Hey, I was wondering if anyone had any input on us.com domains. Is there any downside? I haven't really seen any big sites, or really any at all on us.com domains.

I apologize if this is the wrong forum, as I looked through them all and couldn't find one more appropriate.

I'm just debating between keywordkeyword.us.com and keyword-keyword.us or keyword-keywords.info or something.

I appreciate all input.