User-agent: Mediapartners-Google*
Disallow:

User-agent: Yandex
Disallow: /
Host: sci-tech.ws

User-agent: Google
Disallow:
Host: sci-tech.ws

User-agent: Slurp
Crawl-delay: 2
Disallow:
Host: sci-tech.ws

User-agent: msnbot
Crawl-delay: 2
Disallow:
Host: sci-tech.ws

User-agent: *
Crawl-delay: 4
Disallow:
Host: sci-tech.ws