Why is it so important about Mrs. Wilson? She is of no significance in the CIA or anywhere else. No secrets were/are compromised, no agents endangered, no law broken or even nicked. There is nothing there. This is another case of the crats making an emotional lipquivering accusation that the president puts sugar in his coffee. The accusation has zero significance to anything but repeat it enough times in righteous indignation and the press sells the emotion and takes no thought for the substance. It is the intensity of the accusation and the identities of the accuser and accused that matter. It could all be done in nonsense syllables to the same effect.
You've got it. The Plame-Wilsons are small fish in a big pond, now out of jobs. Their media buddies are promoting this bull$it so the Plame-Wilsons can sell their book/movie/whatever, and try to remain Washington insiders.
When all is said and done, the Plame-Wilsons will be as beloved and popular in DC as John and Maureen Dean.
Woodward said he MAY have told Libby about Plame and her work for the CIA but he couldn't remember for sure. At the very least it casts doubt as to whether Libby was lying about hearing the information originally from "journalists". Instead of Russert he may have heard it from Woodward and just been mistaken.
Secondly, it shows direct contradictions of recollections within the MSM. Since a significant amount of the evidence against Libby is MSM testimony, any discredit brought upon them concerning the facts weakens the case as a whole. Proving the charges against Libby beyond a reasonable doubt has now become more difficult.