A method for collecting user data and constructing a user profile as a digital content vending machine, DCVM is employed which includes an infrastructure and an inventory on a client in a personal computer, PC. The infrastructure presents a graphical user interface on the client which may metaphorically...http://www.google.de/patents/US20010056405?utm_source=gb-gplus-sharePatent US20010056405 - Behavior tracking and user profiling system