User-agent: Googlebot
Disallow: /meter.php
Disallow: /403.php
Disallow: /404.php
Disallow: /416.php
Disallow: /500.php
Disallow: /501.php

User-agent: *
Disallow: /meter.php
Disallow: /403.php
Disallow: /404.php
Disallow: /416.php
Disallow: /500.php
Disallow: /501.php