User-agent: Mediapartners-Google
Disallow: 

User-agent: Googlebot-Image
Disallow: 

User-agent: Googlebot
Disallow: 

User-agent: Googlebot-Image
Disallow: 

# alexa.com
User-agent: ia_archiver
Disallow:

# archive.org
User-agent: archive.org_bot
Disallow:

# msnbot bing.com
User-agent: msnbot
Disallow:

# wget
User-agent: wget
Disallow: /

# httrack
User-agent: httrack
Disallow: /

User-agent: *
Disallow: /robots.txt
Disallow: /sitemap.txt