Receptional_Andy - 2:31 pm on Jul 8, 2010 (gmt 0)
at least it would provide a clear framework.
Other than the slightly barrier of buying a domain rather than setting up a subdomain, surely there's a clear framework already - use a regional domain name?
I think Google would also argue that they've provided this facility already via the Webmaster Tools option. If that doesn't work as well as perhaps it should, then there is the need for specialist advice. But then, that's the case with most Google ranking issues. You can only get so far by following Google's published advice and using their tools.