Just a quick thought... What if you were able to use your Karma to give multiple upvotes, instead of just one? If people agree (by also upvoting that post), you can earn additional Currency. If you assigned multiple upvotes where others downvote, you lose your currency.<p>In my head, it creates an interesting environment where the people that frequently "invest" their Currency correctly will earn an abundance. But that's fine if they're actually good at picking what I want to read.
Your idea relies on karma having been earned because of your contributions here. It's just a number.<p>If you subscribe to the usual tech blogs and rush to submit (or in many cases resubmit) everything they publish indiscriminately you will get a lot of karma.<p>If you have your own site and dump every link you produce here you will get a lot of karma (unless or until the mods notice).
Are you trying to kill the independent mind and promote herd mentality? If things worked this way during the renaissance, Michelangelo would have died like Van Gough (broke and a total failure).<p>As PG has noted as well on many-a-occasion, the best ideas seem crazy at first.