Extended Location add-on for WP Job allows your users to manage their map presence by explicitly choosing exactly where their business is actually located on a map. Not only does this ensure their listings are found on your website, but also by Google. Simply activate the plugin and it will use IP-based lookups to auto-suggest where the user is located and refine listing results to only their relevant location.
This is the EXACT same plugin as distributed by the developer on Astoundify. The developers’ links are provided above.