True, but his method will show the host derived from the IP.
For this IP tracer service, it appears everywhere out of the U.S. gives an unspecific map location of where the user might be. The only occurences when I recieved a "not able to find at this moment" message was when tracing a Google-bot. Also, sometimes when the user is on a Proxy, usually if they have AOl, it will block out some of the fields.
Overall good hack, the zoomed in map is great.