Quantcast

[texasflats]

I'm guessing it grabs the IP of site visitors, and generates resorts from various publicly available demographics... Or it could be just total BS.. 

Introducing Quantcast Internet Ratings

Quantcast is the only open internet ratings service. We provide advertisers with audience profiles for millions of websites and services. We invite publishers to participate and demonstrate the unique value of their audiences. The service is free to everyone.

http://www.quantcast.com/