User-Agent: Googlebot
Allow: /

User-Agent: Googlebot-Mobile
Allow: /

User-Agent: msnbot
Allow: /

User-Agent: bingbot
Allow: /

# Adsense
User-Agent: Mediapartners-Google
Allow: / 

User-agent: Slurp
Allow: /

User-agent: Twitterbot
Allow: /

User-agent: BLP_bbot/0.1
Disallow: /

User-Agent: *
Disallow: /