I agree - I also think Scott was spouting nonsense.
I am not in a position to try the WhatIsMyIP script because I am reading and posting from work (while I am patching servers, so I'm not just slacking off here). Just for grins, I looked up my current IP and plugged it in to the script. The WhatIsMyIP script gave me a 156-net IP address, which is totally off the mark; not even close.
And when I plugged it into the IP field in the Domain White Pages site, it couldn't map the IP to an address, as I suspected it would not be able to do.
Now, Judith_Knows may have a different result if she is posting from home.
I also have traced my IP and it just traces to my ISP and I am doing this from home.