I just discovered this site (http://intrade.com). They are “predictors” and you can buy or sell based on a specific subject. Right now the subjects on the front page include the U.S. economy, the U.S. election, the U.K. economy, oil futures, and a helluva lot more.
Again, interesting stuff, presented in a different way. Worth a look.
Now, I’m going to roast a chicken with garlic, lemon and rosemary, accompanied by au gratin potatoes and steamed broccoli.