There was a website that sold like stocks but it was for predictions of things. I saw a Stossel segment on it (maybe on his Reason youtube show). It was successful and people were predicting things using basically polling like data.  It got shut down.  I wonder because they saw the potential to use it as a weapon against us. I wish I could remember what it was called. I also wonder if Google hoped to not just know the future but alter it by manipulating us in the web?