If i say frankly then i should say i joined Musing as they are rewarding contributions. And this should happen as we are adding value.
I like there rewarding system most.

In case of dislike there is nothing like that but i would say musing.io need some more optimization on website. They should add some more options like deleting reply/questions, checking wallet and question approval or checking after done(as some do silly question which answer doesn't add value both for user and platform) and also flagging system for appropriate answer(as i saw some today) and spams.