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User-agent: DittoSpyder
User-Agent: Googlebot-Image
Disallow: / 

User-agent: Googlebot
Disallow: /*.gif$
Disallow: /*.jpg$
Disallow: /*.jpeg$
Disallow: /*.png$ 

User-agent: *
Disallow: /img/
Disallow: /images/
Disallow: /cgi-bin/