I had an concept once for a decentralized reddit-like that used NNTP to distribute content and an inflationary cryptocurrency to store karma. The idea was that karma is only valuable while the thing that is generating it is relevant. If you wait long enough, your &quot;karma-coins&quot; will be, essentially, worthless. The deflation of your coins is dependent on your average net-worth over some period of time and the state of the global economy. (Maybe?)<p>I got busy with work, so I never got into the implementation stage, but it is on my backlog. Hopefully I get to it some day.