User-agent: Yandex
Disallow: /sources
Disallow: /feed.php
Disallow: /error_log
Disallow: /function.mysql-query
Disallow:  /go.php
Crawl-delay: 10

User-agent: Googlebot
Disallow: /sources
Disallow: /error_log
Disallow: /function.mysql-query
Disallow:  /go.php
Crawl-delay: 10

User-agent: StackRambler
Disallow: /sources
Disallow: /feed.php
Disallow:  /go.php

User-agent: Slurp
Disallow:  /go.php

User-agent: *
Disallow:  /go.php