You know it's bad when:
You see a story teaser like this at the Huffington Post
You note the claim that the "latest attack" is a "vile smear", but you're not sure which one they are referring to
UPDATE: The Washington Post editorial
was saying that likening Rashid Khalidi to neo-Nazis was the "vile smear", not that McCain has leveled a smear against Obama - at least within the scope of this editorial. The Huffington Post teaser is misleading. Still, the point stands. You read about a McCain charge that's over the top - or worse - but you're not sure which of the three you've learned about recently is being discussed.