We have a website that appears well in Google for a particular geographic area. It's a 'service' we offer, so people tend to enter their location into search phrases. It also converts it's (modest) traffic quite well, into enquiries. So far, so good. However, we now wish to expand into other geographic areas. The next one will have a physical address, so that will be useful for Google Places (or whatever they call it this week!) but future expansion will not have physical premises, so no addresses. We are unsure how to modify the site Structure i.e. new pages, page url's, on-site SEO etc., to facilitate this expansion, so that a) we don't damage the existing rankings for the current area and b) can start to rank well in the new area(s). Any help/advice will be greatly appreciated.