<edit>What is best sequence for words in domain?</edit>
[edited by: Webwork at 2:10 pm (utc) on Feb. 5, 2007]
[edit reason] Charter [webmasterworld.com] [/edit]
2. I wouldn't count on much benefit.
3. You might see some variation between search engines.
4. Such an approach might be a signal of an attempt to spam or exploit the search algo and therefore get you knocked down in the index.
In English, it would be normal for people to talk about "free blue widgets" but not "widgets free blue".
Free-Blue-Widgets.com would make sense as a domain name, but Widgets-Free-Blue.com would give the impression that the site was clueless.