Reputation systems (see below)
Gambling on video game matches and tournaments
Casino that pays you for playing
Turn the social credit score upside down.
User side only. i.e. I rate people I know on various dimensions. User defines his own dimensions like tags and gives his friends ratings on the 'how much do I trust your ratings' dimension (in politics, in tech). Once I have enough friends rated, I can choose to see a list of posts from only those people I and my friends trust > 9.0/10. etc Without seeing each other's private ratings.
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