User-Agent: Yandex
Disallow: /

User-Agent: YandexBot
Disallow: /

User-Agent: bingbot
Crawl-delay: 10

User-Agent: *
Allow: /
Disallow: /signup
Disallow: /login
Disallow: /about/dmca
Disallow: /about/terms
Disallow: /about/contact
Disallow: /campaign
Disallow: /about/im