User-Agent: Googlebot-Image
Disallow: /

User-Agent: Yahoo-MMCrawler
Disallow: /

User-Agent: psbot
Disallow: /

User-Agent: NaverBot
Disallow: /

User-Agent: dotbot
Disallow: /

User-Agent: *
Disallow: /mobile/
Disallow: /cgi-bin/
Disallow: /*.pdf$
Disallow: /tool/