This is cool, but you're making assumptions about information that is outside of your immediate connections. This could work in a network where one could trust that all the information one receives from immediate connections about others is true, but that is not the case. In your case, user B could mark everybody as a high value poster, and it be successful in diverting your attention. This causes problems even in the core stack, I cannot believe what a node B will say about at what IP address node C is. A malicious node B could overwrite everybody's node information to one single IP address to create a massive DDoS.

So the solution I found is that there are separate degrees of trust for derived and produced information. If you receive something over the network about a third party, that's derived information, which might not essentially be true. But if you have connected to that node personally, that's produced information, and no derived information can overwrite that.