User-agent: Googlebot
Disallow: /images

User-agent: Googlebot
Disallow: /thumbnails

User-agent: Googlebot
Disallow: /*.jpg$

User-agent: Googlebot-Image
Disallow: /

User-agent: msnbot
Disallow: /*.jpg$

User-agent: Wget
Disallow: /

User-agent: Baiduspider
Disallow: /

User-agent: Fatbot
Disallow: /