User-agent: Baiduspider
Allow: /

User-agent: Googlebot
Allow: /

User-agent: Yahoo Slurp
Allow: /

User-agent: YodaoBot
Allow: /

User-agent: sogou spider
Allow: /

User-agent: Sosospider
Allow: /

User-agent: Mediapartners-Google
Allow: /

User-agent: *
Disallow: /