User-agent: Yandex
Crawl-delay: 30
Disallow: /contact.php?*
Disallow: /send-to-friend.php?*
Disallow: /srennab
Disallow: /view_ad.php?*

User-agent: AhrefsBot
Crawl-delay: 30
Disallow: /contact.php?*
Disallow: /send-to-friend.php?*
Disallow: /srennab
Disallow: /view_ad.php?*

User-agent: *
Crawl-delay: 20
Disallow: /send-to-friend.php?*
Disallow: /srennab