User-agent: Digimarc Marcspider 
Disallow: / 

User-agent: bigdaddy.digimarc.com 
Disallow: / 

User-agent: * 
Disallow: /_db_backups/
Disallow: /_private/
Disallow: /cgi-bin/
Disallow: /img/
Disallow: /scr/
Disallow: /sty/
Disallow: /test/
Disallow: /404.html