# robots.txt

User-agent: Googlebot
Disallow: /a/
Allow: /

User-Agent: msnbot
Disallow: /a/
Allow: /

User-agent: Googlebot-Mobile
Disallow: /a/
Allow: /

User-agent: Yandex
Disallow: /a/
Allow: /

User-agent: YandexDirect
Allow: /

User-agent: *
Disallow: /a/
Allow: /