Does Traffic Goliath work for local websites?
Traffic Goliath is a great tool to give you ideas for extra tags and keywords to rank for.
This applies to any kind of website you have, including a local site (about attorneys, doctors, professionals, etc.)
The tags returned will depend on the "seed" keyword/tag you use to generate more tags. But you are sure to find some ideas you had not considered before. This means extra traffic to your site.