The majority of steem seems fixated on long posts because apparently that brings the most "value". That is incorrect. Social labor between people is the fastest way to build value in a community, and the more time you spend writing your post the less you interact with your community. Short posts should be valued more than longer ones, especially when they start discussions. A big part of that is that while we focus on longer posts only a few people will lead the discussion, but when we allow shorter posts many others who do not have the time or ability to write longer posts can join in.
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From @anarchyhasnogods