keywords in url/domain name

I was wondering what the consensus is about the value of a link like this:
http:www.bluewidgets.com

Will the link help you rank for 'blue widgets', and is it different in impact from
blue widgets

And what if someone links you like this:

coolbluewidgets

Chris, your idea is that option 1 definitely passes keyword-targetted value right? so I guess #3 as well. Have you ever researched it?

Of course # 3 can also but the top keyword for that will be the cool word.. I'm I right? :lol:

Yes, for some words search engines can parse runons, but others they cannot, so it depends on the exact words of your phrase.

Keyword in the URL is good thing, because when google crawl the site then he find exact keyword match with URL. It is really help full to you.