Thank you @ibbtammy
I believe personally that writing lacks tone, but in microblogging this issue is exacerbated. So someone might think a snark comeback is funny but the receiver might feel it is mean. In long form we have enough words available to explain how what we are saying is a joke or how it is all stupid etc. However main issue remains that more eyeballs means more rewards there and hence people will go to any level to create drama.