Abstract: A centralized distribution server includes a converter for embedding content data into a digital delivery stream and a transmitter for transmitting the stream to at least one of the subscriber terminals via a forward network channel. The terminal includes a receiving component for receiving the stream from the centralized server and an interface component for enabling access to the stream and/or the content data embedded therein by a subscriber. The terminal includes a first component for generating a first acknowledgement upon receipt of the stream by the receiving means, and a second component for generating a second acknowledgement upon access of the stream and/or the content data embedded therein by the user. The acknowledgements are transmitted to the centralized distribution server via a return network channel. The centralized distribution server includes a feedback management module for receiving the two acknowledgements transmitted from the terminal to the centralized distribution server.