function deleteTags( $blog_id, $tag_group ) {

		/** @var $wpdb \wpdb */
		global $wpdb;

		$result = $wpdb->delete(
			$this->dbLinkTable, [
				'users_id' => $this->userId,
				'blogs_id' => $blog_id,
				'tags_group' => $tag_group,
			], [ '%d', '%d', '%d' ]
		);

		// TODO:
		// Optimize the links table: $wpdb->query( "OPTIMIZE TABLE {$this->dbLinkTable} " );

		return $result;

	}