I have extended the iris.to Nostr client, into a clone of the site with a  reputation system on it (prof of concept). It works, but it is still fairly simple: https://dpeep.com. 
You can trust people and posts, and the trust network extends 3 degrees deep. You need to create multiple accounts and trust each other to see the effects and the networks of web of trust.
I'll write some posts about how the general system works later.
 

 In a network of trust with, say, 100,000 people, it only takes one or a few people to spot the bot and decide to distrust it. Once that happens, the rest of the network gets the signal that the account isn’t trustworthy, and most people won’t even see the spam. Instead of everyone having to individually check if the content is valid, the Web of Trust allows for the community to quickly filter out the bad actors. It’s like crowdsourced spam protection—one or two people deal with it, and the rest benefit from it.

#wot  #weboftrust  #reputation  #trust 

 So, you’re saying that once one or a few people don’t like your posts, you’re hidden from everyone else, forever? 

 Not at all! It’s not about being "hidden forever" just because a few people don’t like your posts. In a Web of Trust, trust is subjective. So, if a few people distrust you, it only affects their network and the people who trust them. Your posts would still be visible to others who trust you or those who haven’t built trust with the people who flagged you. It's a decentralized system, so no single opinion or small group can wipe you out across the entire network—your visibility depends on the trust relationships you build.