Musing is a question answer platform like Quora, but it is built on top of steem blockchain. If you have any question and you do not find the exact answer, you can ask that question here. You will get the answer from other people. The interesting thing is, you can get upvote for asking question.
A lot of people ask questions on Musing every day. You can help others answering their questions. In this way you will not help the person who asked the question, but also you help many people all over the world. People will upvote your answer if they find it useful. Even Musing itself gives upvote for quality answer. This is an awesome platform where you get rewards for your contribution.
This question answer may be given so many times. In musing you can ask a question and also you can also give an answer to a question. If your question or answer is helpful to people then you will get an upvote from musing. This is how it works.
But still, you have to know about musing. That is don't give any irrelevant reply to a question. Don't copy any answer from the web. Musing doesn't support copy pasting or scams. Try to find out the depth of the question and then answer it. Musing is helping people to enrich their knowledge.