Then... I want to say that they got really boring for a while as various people were using it to pitch their own business. I recall one that was about shipping fresh water somewhere via long plastic tubes on the ocean... and the predictor had a company that he was trying to get funding for to ship water on the ocean via large plastic tubes.
This bet falls into the same category of boring, pitching a product (a particular drug).
Unfortunately, Long Bets has moved from interesting wagers about the future of people and trying to get people to think about time scales beyond the next few years to something longer - as part of the Long Now foundation ( https://longnow.org ).