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Disallow: /wp-content/plugins
Disallow: /wp-content/themes
Disallow: /readme.html
Disallow: /refer/
Allow: /wp-admin/admin-ajax.php
Allow: /wp-content/uploads/

User-agent: Bingbot
Disallow: /wp-admin/
Disallow: /wp-content/plugins
Disallow: /wp-content/themes
Disallow: /readme.html
Disallow: /refer/
Allow: /wp-admin/admin-ajax.php
Allow: /wp-content/uploads/

User-agent: Slurp
Disallow: /wp-admin/
Disallow: /wp-content/plugins
Disallow: /wp-content/themes
Disallow: /readme.html
Disallow: /refer/
Allow: /wp-admin/admin-ajax.php
Allow: /wp-content/uploads/

User-agent: DuckDuckBot
Disallow: /wp-admin/
Disallow: /wp-content/plugins
Disallow: /wp-content/themes
Disallow: /readme.html
Disallow: /refer/
Allow: /wp-admin/admin-ajax.php
Allow: /wp-content/uploads/

User-agent: *
Disallow: /