User-agent: Yandex
Disallow: 

User-agent: YaDirectBot
Disallow:

User-agent: YandexBlog
Disallow:

User-agent: Googlebot
Disallow:

User-agent: StackRambler
Disallow:

User-agent: msnbot
crawl-delay: 15
Disallow:

User-agent: Slurp
crawl-delay: 10
Disallow:

User-agent: Googlebot-Image
Disallow:

User-agent: Mediapartners-Google*
Disallow:

User-agent: *
Disallow: /