According to one embodiment of the invention, a computer-implemented method for a digital broadcast system is described. The method involves an operation of receiving an electronic questionnaire that includes a plurality of questions registered to avoid duplication of any one of the plurality of questions. The electronic questionnaire, when processed by a receiver of the digital broadcast system, generates for display a plurality of questions. The receiver acquires answers to the electronic questionnaire, where the answers are used in adjusting content subsequently downloaded to the receiver.