User-agent: baiduspider
Disallow: /

User-agent: BaiDuSpider
Disallow: /

User-agent: Baiduspider
Disallow: / 

User-agent: YodaoBot
Disallow: /

User-agent: Spider
Disallow: /

User-agent: robot
Disallow: /

User-agent: Inktomi 
Disallow: / 

User-agent: exabot
Disallow: /