colonist writes "NASA's prize competitions program, Centennial Challenges, held its first workshop June 15-16, 2004 to brainstorm ideas, define rules and set prize amounts. The post-workshop report (PDF) is available. New ideas for challenges should be sent to <ccideas@hq.nasa.gov>. The Centennial Challenges program is supported by the X Prize Foundation, the Aldridge Commission and some members of Congress, but not all."
http://slashdot.org/article.pl?sid=04/07/16/1738258