MOMENT OF TRUTH?http://talkingpointsmemo.com/archives/216372.php[Josh Marshall] We're at a key moment -- where we learn if there is any consequence in this election for serial lying. It's a question that only the major media outlets will be able to answer.McCain flat-out lies, claims that Palin never requested earmarks as governorhttp://thinkprogress.org/2008/09/12/mccain-palin-view/WALTERS: What