Source Reference:

• Component: bbPress :: bbp-user

  File: /bbp-includes/bbp-user-functions.php :: Trac Source Line: 972

  		// Check if spam
  		if ( !empty( $user->spam ) )
  			$is_spammer = true;
  
  		if ( 1 == $user->user_status )
  			$is_spammer = true;
  	}
  
  	return apply_filters( 'bp_core_is_user_spammer', (bool) $is_spammer );
  }
  
  /**
   * Mark a users topics and replies as spam when the user is marked as spam
   *
   * @since bbPress (r3405)
   *
   * @global WPDB $wpdb
   * @param int $user_id Optional. User ID to spam. Defaults to displayed user.