User-agent: *
Disallow: /share
Disallow: /sharing
Disallow: /account
Disallow: /beta
Disallow: /forums
Disallow: /classes

User-agent: Googlebot-Image
Disallow: /  
Disallow: /share
Disallow: /sharing
Disallow: /account
Disallow: /beta
Disallow: /forums
Disallow: /classes

User-agent: ia_archiver
Disallow: /
Disallow: /share
Disallow: /sharing
Disallow: /account
Disallow: /beta
Disallow: /forums
Disallow: /classes