User-agent: msnbot* 
Disallow: /

User-agent: Slurp*
Disallow: /

User-agent: Yahoo! Slurp*
Disallow: /

User-agent: Mediapartners-Google* 
Disallow: 

User-agent: Googlebot* 
Disallow:

User-agent: Googlebot/2.1*
Disallow: