I'll just throw this out and step back so that mud throwing may begin.
Survey says, in summary: Fox News watchers are less informed. NPR listeners are the best informed. From a Poynter report on the survey:
People who watch no news at all can answer more questions about international current events than people who watch cable news, a survey by Fairleigh Dickinson University’s PublicMind finds.NPR and Sunday morning political talk shows are the most informative news outlets, while exposure to partisan sources, such as Fox News and MSNBC, has a negative impact on people’s current events knowledge.
People who watch MSNBC and CNN exclusively can answer more questions about domestic events than people who watch no news at all. People who only watch Fox did much worse. NPR listeners answered more questions correctly than people in any other category.
The survey of 1185 random people conducted by landline and cell phone in early February follows a similar poll FDU conducted last November, which surveyed only New Jersey residents and returned similar results.
PS — Good suggestion from a reader: A listing of those restaurants that force those who choose to eat there to watch Fox News. It's under consideration.