Raph Levien solved this in the mid-90s with a metric based on a single source of trust flowing through the network, as part of his dissertation for his PHD. I'm fairly confident implementing his algorithm but with every user as the source of their own trust flow would solve this. Might be CPU-heavy.

citeseerx.ist.psu.edu/document?rep... It's a solved problem. Mostly. But rage drives engagement, which drives ad impressions, so it's more profitable to let the problem fester.