1. A computer-implemented method for processing data, the method comprising: receiving at least advertising data, clickstream data, and program data in an advertising measurement system, wherein at least the clickstream data are obtained from a program delivery source located in a household of a consumer, wherein the program delivery source is not dependent on a supplemental data collection device in the household for data collection; cross-correlating at least portions of the advertising data, the clickstream data, and the program data in the advertising measurement system; and, calculating at least one metric based on the cross-correlated data.