Jonathan Schwarz cites a telling tidbit about George Will, Noam Chomsky and Newsweek in the days before blogs were around as an open-source fact checking organization:
CHOMSKY: [A] few years ago George Will wrote a column in Newsweek called “Mideast Truth and Falsehood,” about how peace activists are lying about the Middle East, everything they say is a lie. And in the article, there was one statement that had a vague relation to fact: he said that Sadat had refused to deal with Israel until 1977. So I wrote them a letter, the kind of letter you write to Newsweek—you know, four lines—in which I said, “Will has one statement of fact, it’s false; Sadat made a peace offer in 1971, and Israel and the United States turned it down.”
Well, a couple days later I got a call from a research editor who checks facts for the Newsweek “Letters” column. She said: “We’re kind of interested in your letter, where did you get those facts?” So I told her, “Well, they’re published in Newsweek, on February 8, 1971″—which is true, because it was a big proposal, it just happened to go down the memory hole in the United States because it was the wrong story. So she looked it up and called me back, and said, “Yeah, you’re right, we found it there; okay, we’ll run your letter.” An hour later she called again and said, “Gee, I’m sorry, but we can’t run the letter.” I said, “What’s the problem?” She said, “Well, the editor mentioned it to Will and he’s having a tantrum; they decided they can’t run it.” Well, okay.