I'm not sure valuing "zaps" as a metric would achieve the goal of reducing the percentage of Bitcoin-related content, since the ones using Bitcoins are also the ones zapping and getting zapped. This seem like it would just make the problem worse.
Discussion
Perhaps, yeah.
Algorithmic feeds was what I was pitching. Different clients could implement them in different ways and compete with each other. I'd personally gravitate towards the one that values zaps as a metric.
People can zap themselves so that metric is a bit useless.