[Brandon0]

Tracking an individual is different than storing personally identifiable information. I can assign you an arbitrary (or seemingly arbitrary) userID (that is unique to you), but does not personally identify you, as a way to track you. This arbitrary userID is meaningless to any third parties. What I cannot assign you, is your name, email address, or even IP address as a way to track you since anyone that sees that information could figure out who it belongs to.