I've looked at Maxmind who has affiliate and reseller programs and IP2Location who has an affiliate program:
http://www.SellShareware.com/Program...108&PrID=59152 ).
I've looked at ARIN. But, when I did the customer query at ARIN all I got was the latitude and longitude in the database, not the city and state info that shows in their tutorial. So, I probably had something screwed up.
The AFF are fairly accurate. Depending on the IP I get when I connect it will be within 50 miles.
I just think that showing your town is a proper level of personalization to grab a surfer's attention. Showing a nearby major intersection may be so close as to be creepy.
Geo-targeting is definitely worth spending some time researching and testing.