A method, apparatus and article of manufacture for collecting, storing and processing usage data from a device. Usage data is extracted from the device, wherein the usage data is associated with a customer identifier. The customer identifier is obfuscated, but not eliminated, from the extracted usage...http://www.google.es/patents/US7343375?utm_source=gb-gplus-sharePatente US7343375 - Collection and correlation over time of private viewing usage data
Collection and correlation over time of private viewing usage data
