A recent question from an SEO forum asking about if you have a local business with multiple location. How do you optimize for those separate locations? The best approach is to have separate pages within the same domain. An example would be www.yoursite.com:

The Internet has opened the door to a huge global audience for any organization advertising products or services. But what if your target audience is a local one? Two of the most popular Internet search engines have developed tools that give online visitors the ability to perform local searches, so they can find [...]