Having a tracking code on a website that aggregates to a Recent Visitor Map can be very helpful in the following ways.
Do you find that you are missing traffic from a specific country? It may be time to use Adwords to target those areas for thirty (30) days and see if traffic pattern for those area improve.
Are you getting traffic from mostly English speaking areas such as the United States, the United Kingdom and Australia? Consider making your site available in other languages through a subdomain or Google Translate script.