1. A method comprising: at a Set-Top Box, monitoring received input from one or more viewers, the Set-Top box comprising a temporary power backup, the Set-Top Box comprising a software component adapted to send an event notification responsive to a determination that the Set-Top Box is no longer receiving AC power; and in response to detecting that the received input is an interaction of a type of interest, sending an event message to an event server, the event message identifying the type of the detected interaction and an indication of the Set-Top Box and receiving new digital content responsive to the event message.