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A referral program is certainly on our radar, but the dev pipeline is extremely crowded which is why we are currently focusing on solutions that do not require modifications to code. The important point here is that if we can develop solutions that work without a referral program, then the implementation of a any code-based mechanism will MULTIPLY the impact of our solutions. Good question!

Is this because Dan Larimer left?

Every activity on Steemit is exposed to market incentives. Just like my vote here :)