The present invention discloses systems for monitoring advertisements. A system for monitoring advertisements in a broadcast television channel in accordance with the present invention comprises a sound level monitor for monitoring an audio level of a first broadcast television channel, a data tagger, coupled to the sound level monitor, for tagging a start and an end of an advertisement segment within the first broadcast television channel, and a receiver, wherein when the receiver is first tuned to the first broadcast channel and then tuned to a second broadcast channel, an on-screen display is displayed on a monitor displaying the second broadcast channel, the OSD being displayed when the end of the advertisement segment within the first broadcast channel occurs.