Of course, the McCain campaign can’t be too worked up over rumor e-mails when its own campaign is putting out ads of dubious truth.

Joe Klein writes, “Back in 2000, after John McCain lost his mostly honorable campaign for the Republican presidential nomination, he went about apologizing to journalists–including me–for his most obvious mis-step: his support for keeping the confederate flag on the state house.

“Now he is responsible for one of the sleaziest ads I’ve ever seen in presidential politics, so sleazy that I won’t abet its spread by linking to it.”

Here’s the fact check.

CBS forces YouTube to take down McCain Web ad featuring Katie Couric, trying to link her comment about media sexism to Obama’s “lipstick on a pig” remark. Here’s the ad on McCain’s Website, which may be a first in this election cycle: A campaign cannot get an ad on YouTube.

There’s plenty of comment in the media about all this, and speculation that McCain may be overplaying his (muddied?) hand.