Add sockpuppet spammer detection. Automatically flag posts if they are from new users (registered less than 24 hours ago) at the same IP address and one of them started the topic.

lib/post_creator.rb

@@ -76,6 +76,8 @@ class PostCreator
                            { user: @user,
                              limit_once_per: 24.hours,
                              message_params: {domains: @post.linked_hosts.keys.join(', ')} } )
+    else
+      SpamRulesEnforcer.enforce!(@post)
     end
 
     enqueue_jobs