Automatically flag someone as a spammer if their posts get at least X spam flags from N users while their trust level is 'new user'. Staff can clear and set this status from the user record in admin.

db/migrate/20130603192412_add_blocked_to_users.rb

@@ -0,0 +1,5 @@
+class AddBlockedToUsers < ActiveRecord::Migration
+  def change
+    add_column :users, :blocked, :boolean, default: false
+  end
+end