NOTHING GOOD IS on TV between 1 a.m. and 6 a.m., and for good reason. Nobody’s trying. It’s the time period known euphemistically in the media business as the “Post Late Fringe,” and less euphemistically as the “Graveyard Slot.” It’s when networks and local TV affiliates sign off. They give up.
via The lucrative secret behind infomercials – The Week.
