Barack benefits from the gaffe happening on cable and not network TV. While YouTube is a fan fave among, say, the 18-34 year old set, interest in YouTube drops dramatically among other viewer-voters. Our very own Willard Mitt Romney cast asparagus on YouTube. In anticipation of the 9/17/07 YouTube-sponsored GOP debate in St. Petersburg, FL, he indicated he would not accept questions from a snowman.
Any interest in the issue likely has the sustainability of a quick YouTube video. The statements were not widely watched and discussion seems to focus on the word "precondition." Alphabet soup. Barack can counter that what he meant was he "would consider (attending those meetings)..." and show that he, as President, would approach all meetings with an open mind. As you've observed, though, the issue's a real yawner.
Clinton's choice of Madeline Albright as spokesperson was ill-advised. The lady is no longer that prominent in the public eye and, as an announced Hillary supporter, is hardly objective. Hillary's connection to the Clinton presidency doesn't need to be re-enforced. Albright's participation may also open the door to a discussion of the Clinton administration's inability to handle threats from the Taliban militia and Al Qaeda. The September 11 attacks happened just 8 months after Clinton and Albright left office. Also, male viewer-voters may bristle at yet another female presence in the Hillary camp. Couldn't Senator Clinton have called someone else forward?
Clinton is heavily favored by the D.C. and D.N.C. establishment. Her representing "old politics", in this particular episode, fits as a description. She needs to present herself in the 21st century, not re-visit the 1990s.
As for Sen. Obama, wonder whether the issue is lack of "experience" or lack of "political maturity."