I came across a site today called Literally Unbelievable, which carries, in their own words, "Stories from The Onion as interpreted by Facebook".
And reading some of the entries, I was frightened that so many people don't get that The Onion is a satirical site, especially when the stories in question are so outlandish that I can't understand how anyone would believe they are true, like the idea that the last 7 minutes of the final Harry Potter movie are going to be released as 7 separate films or a story about how Obama once again resisted the urge to launch the entire nuclear arsenal at once because he can.
It seriously makes me question the common sense of a substantial number of people. Especially since when presented with such stories, they didn't see if any other news organization was covering it. That would seem to be at the very least, the smart move in that situation.