User-agent: *
Disallow: /images/overlay
Disallow: /images/scale
Disallow: /ajax
Disallow: /ajax_pub
Disallow: /*/ajax
Disallow: /*/ajax_pub

User-agent: AhrefsBot  
Disallow: /images/overlay
Disallow: /images/scale
Disallow: /ajax
Disallow: /ajax_pub
Disallow: /*/ajax
Disallow: /*/ajax_pub
Crawl-Delay: 30

User-agent: grapeshot
Disallow: /images/overlay
Disallow: /images/scale
Disallow: /ajax
Disallow: /ajax_pub
Disallow: /*/ajax
Disallow: /*/ajax_pub
Crawl-Delay: 30

User-agent: Bingbot
Disallow: /images/overlay
Disallow: /images/scale
Disallow: /ajax
Disallow: /ajax_pub
Disallow: /*/ajax
Disallow: /*/ajax_pub
Crawl-Delay: 1

User-agent: BingPreview
Disallow: /images/overlay
Disallow: /images/scale
Disallow: /ajax
Disallow: /ajax_pub
Disallow: /*/ajax
Disallow: /*/ajax_pub
Crawl-Delay: 1

User-agent: AdIdxBot
Disallow: /images/overlay
Disallow: /images/scale
Disallow: /ajax
Disallow: /ajax_pub
Disallow: /*/ajax
Disallow: /*/ajax_pub
Crawl-Delay: 1