User-agent: ia_archiver
Disallow: /

User-agent: Baiduspider
Disallow: /

User-agent: BaiduImagespider
Disallow: /

User-agent: yodaobot
Disallow: /

User-agent: Yeti
Disallow: /

User-agent: NaverBot
Disallow: / 

User-agent: *
Crawl-delay: 30
Request-rate: 1/10
Visit-time: 1800-2400