User-agent: *
Disallow: /stats/

User-agent: *
Disallow: /images/

User-agent: *
Disallow: /*.pdf$
Disallow: /*.doc$

User-agent: Googlebot
Disallow: /*.pdf$
Disallow: /*.doc$ 

User-Agent: Googlebot-Image 
Disallow: / 

User-agent: Yahoo-MMCrawler
Disallow: / 

User-agent: psbot 
Disallow: / 

User-agent: ia_archiver
Disallow: /

User-agent: ArribaPacketRat 
Disallow: /

User-agent: searchpreview
Disallow: /

User-agent: AboutUsBot
Disallow: / 

User-agent: ACONTBOT 
Disallow: /

User-agent: SurveyBot
Disallow: /