This is excellent news and a great step towards openness and transparency in the government. (For those of you wondering, apparently the creative works of the transition team are not automatically in the public domain as is the case for a number of government-generated material ).
Plus, all user submissions to the website are also under the same license. Nice!
My only question: why is Obama using the Unported license? If the national, ported licenses offer more legal certainty, why isn’t the website under the U.S. BY 3.0?