User-agent: Yandex
Disallow: /click.php
Disallow: /sokz.php
Disallow: /sokz-utf.php

User-agent: Googlebot
Disallow: /click.php
Disallow: /sokz.php
Disallow: /sokz-utf.php

User-agent: StackRambler
Disallow: /click.php
Disallow: /sokz.php
Disallow: /sokz-utf.php

User-Agent: *
Disallow: /click.php
Disallow: /sokz.php
Disallow: /sokz-utf.php