User-agent: Baiduspider
Disallow: /articlefile
Disallow: /n_manage
Disallow: /webfile
Disallow: /css
Disallow: /images

User-agent: Googlebot
Disallow: /articlefile
Disallow: /n_manage
Disallow: /webfile
Disallow: /css
Disallow: /images

User-agent: YahooSeeker
Disallow: /articlefile
Disallow: /n_manage
Disallow: /webfile
Disallow: /css
Disallow: /images

User-agent: * 
Disallow: /