User-agent: * 
Disallow: /awstats
Disallow: /wp-admin
Disallow: /wp-includes
Disallow: /trackback
Disallow: /feed
Disallow: /wp-content/plugins
Disallow: /wp-content/cache

Disallow: /comments

User-agent: Yandex
Disallow: /awstats
Disallow: /wp-admin
Disallow: /wp-includes
Disallow: /trackback
Disallow: /feed
Disallow: /wp-content/plugins
Disallow: /wp-content/cache

Disallow: /comments