Somehow I just heard about, a site where people can put their money where their mouth is when it comes to long range predictions. There are plenty of bets by people who readers of this site will certainly have heard of, and the terms of the bets themselves are quite interesting as well. They range from the bizarre (Danny Hillis betting Nathan Myhrvold that the universe will someday stop expanding) to the pragmatic (Esther Dyson betting Bill Campbell that Russia will be the world leader in software development by 2012). Cool stuff.