no geographic barriers, such as mine, it doesn't make much sense to include geography in the name regardless of where the corporation is registered.
the goal of the domain name is not to be an intuitive locator of your internet objects. that's the job of a directory service (like whois or whois++ or x.500.) your domain names are meant to uniquely identify you in a semi-permanent way -- as long as they are unique and are more permanent than your IP address, they are doing their job. within that context, anything that deepens the tree will give us more opportunities for uniqueness. if someone else who wants to do business on the internet has named their company "xmission" (let's say they are in the auto parts business, specializing in transmissions, but they do a lot of mail order business and thus like you, have no obvious geographic limitations), they should be able to register a domain name that looks a little like yours (has "xmission." near the front of it.) if we deepen the tree by inserting industry codes or geography names, you can both have "xmission." in your name. onlookers will have trouble telling the differ- ence, and may find the wrong "xmission." but at least they will have the opportunity to find both.