User-agent: StackRambler
Disallow: /system
Disallow: /admin
Disallow: /login
Disallow: /logout

User-agent: Googlebot
Disallow: /system
Disallow: /admin
Disallow: /login
Disallow: /logout

User-agent: Mail.Ru
Disallow: /system
Disallow: /admin
Disallow: /login
Disallow: /logout

User-agent: Yandex
Disallow: /system
Disallow: /admin
Disallow: /login
Disallow: /logout
Crawl-delay: 0.1

User-agent: *
Disallow: /