I just learnt about polymarket recently, it's banned in Australia, and I'm not a fan of gambling in general, but P2P gambling based on predictions on real world events seems interesting.

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Prediction markets have been shown as effective means of propagating knowledge.... but that's not all! They can provide huge monetary incentives for trusted, fact-based journalism, they can effectively replace insurance markets and venture capital... they can even be used as assurance contracts. People just have to get over "gambling, ick"