You can now browse for guitar shops and services on guitar-list using Google maps. Go to the shops and services page and choose your country, next each of your country's states or provinces is a map link which will take you to a Google map.

You can zoom or pan the map, and even look at a satellite image, with the guitar shop markers overlayed. (In the language of the internet 2.0 this is a mashup of the guitar-list database with Google maps!)