User-agent: * 
Disallow: 
User-agent: Yahoo! Slurp
Crawl-delay: 400
User-agent: Yahoo! Slurp China
Crawl-delay: 400
User-agent:Sogou web spider
Crawl-delay:3600 
User-agent:Sosospider
Crawl-delay:3600 
User-agent:YodaoBot
Crawl-delay:3600
User-agent:msnbot
Crawl-delay:3600