> Supposing you have a directed graph of every human who is willing to publicly vouch for the credibility of some other human, you can run something like PageRa

> Supposing you have a directed graph of every human who is willing to publicly vouch for the credibility of some other human, you can run something like PageRank on that to determine the degree to which you should trust some random reporter. I'm not sure that would work particularly well. People are often subject to Confirmation bias and Authority bias which lead them to put too much credibility on people who say what they want to hear or who hold a position o power. Your idea would only work in a context where we can trust participants to make accurate judgements of credibility.