Dan Froomkin links to a Media Matters post that poses an interesting question:

On October 13, 2003, Time magazine ran an article that included a quote from White House press secretary Scott McClellan insisting that White House senior adviser Karl Rove had nothing to do with outing undercover CIA operative Valerie Plame. As Media Matters for America has previously noted, at least two Time editorial employees involved in the article knew McClellan's denial was false: correspondent Matthew Cooper and Washington bureau chief Michael Duffy. Cooper knew the denial was false because Rove had outed Plame to him. Duffy knew the denial was false because Cooper had sent him an email relating what Rove had told him.

Former Time White House correspondent John Dickerson, in a first-person account of his knowledge of the Plame matter, now acknowledges that he, too, knew that Rove was Cooper's source well before the October 2003 article - an article on which he, like Cooper, received reporting credit.

So, Media Matters asks, "How many Time reporters knew they were deceiving readers about Rove's role in Plamegate?" Makes you wonder.

Update (because I'm too lazy to give it its own post): National Journal reports that Scooter Libby told a grand jury that Dick Cheney "authorized" him in summer 2003 to release classified information to journalists in order to build support for the Iraq war. Between this and the Media Matters post, today was a good day for Plamegate junkies, wouldn't you say?