Through a 'normal' IP address you can usually determine a person's physical location and/or where they work.
In some cases I know of instances of people being tracked to a single computer at a library in 'real-time' (yes, they were physically tracked down while sitting there).
I do not support IP tracking. I support moderated forums.
Dorian
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flyers'places - restaurant, bar & hotel recommendations:
http://www.flyersplaces.com
Dorian's Star Alliance RTW Price Chart:
http://www.informationlab.com/rtw.htm
Blondebomber's Star Alliance Comparison Chart:
http://members.home.net/deercroft/starall00.html