It gets much, much worse than this. Companies are now promoting data services to advertisers that allow a company to install a cookie on their website and, by

It gets much, much worse than this. Companies are now promoting data services to advertisers that allow a company to install a cookie on their website and, by just having a user complete a site visit, match an IP address to a physical mailing address with claimed 90% + accuracy. Don't believe me? Check out this company: https://www.eltoro.com/ https://www.eltoro.com/ One of many companies that have recently popped up offering just such a service.