User-agent: *
Disallow:

User-agent: Yandex
Disallow:
Host: signin.ru

User-agent: Slurp
Disallow: /

User-agent: Yahoo! Slurp
Disallow: /

User-agent: Aport
Disallow: /

User-agent: msnbot
Disallow: /

User-agent: Webalta
Disallow: /

User-agent: Turtle
Disallow: /