User-agent: Googlebot
Disallow: /*?action
Disallow: /*sort=
Disallow: /*msg
Disallow: /Themes
Disallow: /Sources

User-agent: Slurp
Disallow: /*?action
Disallow: /*sort=
Disallow: /*msg
Disallow: /Themes
Disallow: /Sources

User-agent: *
Disallow: /forum/index.php?action
Disallow: /Themes
Disallow: /Sources