User-agent: * 
Disallow: /tracker.php*

User-agent: Yahoo! Slurp
Disallow: /

User-agent: Yahoo! Slurp China
Disallow: /

User-agent: CollapsarWEB
Disallow: /

User-agent: qihoobot
Disallow: /

User-agent: Twiceler
Disallow: /

User-agent: Steeler
Disallow: /

User-agent: Sosospider
Disallow: /

User-agent: YoudaoBot
Disallow: /

User-agent: YodaoBot-Mobile
Disallow: /

User-agent: msnbot
Disallow: /

User-agent: ia_archiver
Disallow: /