How to guarantee the purity of content on the BMCHAIN platform?

One of the most important issues of the BMCHAIN platform is the quality of the generated articles. There always will be someone posting the message without any benefit for other users or with some unacceptable contents. If there will be more useless posts than a good content it would be hard to find some useful or interesting information. So all the benefits the platform will have for our users would be killed by a lot of trash posts.

To avoid this we decided to establish a clear and strict rules for all users and set some moderators who will look after the new post on the platform in some way.

How do you think is the moderation necessary for the platform and who should be a moderator?