If other people have suggested this before, there may be enouph background support to make it worth following up on this idea.

When I get home from work, I will post in the discussion forum to see if people would be interested in working to legalize prediction markets ( like intrade) it the US.

[EDITED: shortly after making this post, I saw Gwern’s post above suggesting that an alternative like prediction book would be just as good. As a result I did not make a post about legalizing prediction markets and instead tried prediction book for a month and a half. After this trial, I still think that making a push to legalize predictions markets would be worthwhile]