User-agent: googlebot
Disallow: /reg.php
Disallow: /go2.php
Disallow: /go.php
Disallow: /login.php

User-agent: Yandex
Disallow: /reg.php
Disallow: /go2.php
Disallow: /go.php
Disallow: /login.php
 
User-agent: StackRambler
Disallow: /reg.php
Disallow: /go2.php
Disallow: /go.php
Disallow: /login.php
 
User-agent: Yahoo! Slurp
Disallow: /reg.php
Disallow: /go2.php
Disallow: /go.php
Disallow: /login.php
 
User-agent: msnbot
Disallow: /reg.php
Disallow: /go2.php
Disallow: /go.php
Disallow: /login.php

User-Agent: *
Disallow: /