The WaPo apparently was pulilng it out of their ass when they alleged last year that The Daily Show may be bad for democracy (by making young people cynical, and -- in WaPo's unsupported, fevered conservative imagination, less likely to vote), but you know, it helps when your proof means what you think it means.
Let me sum up: Apparently, viewers of The Daily Show tend to be cynical about candidates, the electoral process, and the media -- which MAY lead to lower voting and apathy -- but no direct evidence of this was shown. Indeed, the actual study author's the WaPo was drawing from say that it could have such negative effects, but the researchers also mention the (also untested) possibility that TDS-inspired discontent may get people more involved. And indeed, studies in 2004, as I recall, showed that TDS viewers tend to be more informed than young viewers of other news programs, so, as the study said, "Participation breeds more participation and informed participation," and TDS may help viewers become more informed as they strive to "get" Stewart's humor.
Who knows, but the conservative WaPo apparently wanted to jump to a conclusion about Jon Stewart and whether he was hurting America.
No, wait, that was CNN's Crossfire, Tucker Carlson and Paul Begala.
n.b. Do you think WaPo will decide The 1/2 Hour News Hour (T1/2HNH), the conservative "answer" to The Daily Show, is also bad for America? Or is it too wretchedly bad to matter?