User-agent: *
Disallow: /_search
Disallow: /_add

User-agent: msnbot
Crawl-delay: 1

User-agent: Slurp
Crawl-delay: 1

User-agent: Yandex
Crawl-delay: 1

User-agent: BLEXBot
Crawl-delay: 1

User-agent: grapeshot
Crawl-delay: 1