There remains the small problem of determining which nodes got a high rating, or even simpler, finding for each discussion a node with a desired reputation -
and somehow, the reputation of a node remains secret to everyone but to root, the author and any voter. So my strategy would be to recruit a faction of voters
that report on "high reputation" nodes (through putting a "probe" vote on the nodes, thus skewing the image a bit).
Stranger yet, We're allowed to see the reputations of popular and upopular nodes. I'm not sure why (at least after you've used your votes) you aren't permitted to see a nodes rep.