I've seen criticism of the karma system in general, people doing everything for likes. Maybe the same thing as for the algorithm applies: turns out hate and an

I've seen criticism of the karma system in general, people doing everything for likes. Maybe the same thing as for the algorithm applies: turns out hate and anger give the most engagement and in turn the most likes, so people optimize for it. Another thing, on Twitter it seems obvious that the way mentions and retweets draw other people into discussion facilitate mobbing, but of course they are good for viral growth.