User-agent: Googlebot
Crawl-delay: 100

User-Agent: *
Crawl-delay: 300
Allow: /wp-content/uploads/
Disallow: /wp-admin/
Disallow: /readme.html
Disallow: /refer/
Disallow: /*blackhole
Disallow: /?blackhole

#WP Import Export Rule
User-agent: *
Disallow: /wp-content/uploads/wp-import-export-lite/