I was taking a look at http://wickeddevelopers.com/wiki/projects/whmcs/clientmaps , which: "ClientMaps Pro is an integration between your WHMCS installation and Google Maps service. It allows you to display the location (cities) of your clients on a nicely formatted Google Map, in order to boost sales, or show business dominance over a geographical area."
And makes maps like this:
I'd prefer not to alienate customers. Anyone feel that something like this is a privacy violation?