User-agent: *
Crawl-delay: 10

User-agent: twengabot
Crawl-delay: 5

User-agent: voilabot
Crawl-delay: 5

User-agent: exabot
Crawl-delay: 5


User-agent: slurp  
User-agent: googlebot
User-agent: msnbot
Crawl-delay: 20