Effective Ways of Dealing With Spammers
From a hackernews thread on dealing with spammers on your platform: … one of the most effective ways of dealing with spammers is to “shadowban” them. Allow them to use your service, but don’t indicate to them that you’ve identified them as malicious. For instance, when dealing with chat spammers, allow them to chat, but do not show their chats to other users. Another level would be to allow them to chat, but only show their chat to other shadowbanned users. … If the malicious actor doesn’t know they’ve been marked as malicious, they do not know they need to change their behavior. ...