User-agent: MainCrawler/Nutch-0.8.1
Disallow:

User-agent: DBSearch
Disallow:

User-agent: Googlebot
Disallow:

User-agent: Teoma
Disallow:

User-agent: MSNBot
Disallow:

User-agent: Slurp
Disallow:

User-agent: baiduspider
Disallow:

User-agent: NutchCrawler/Nutch-0.9
Disallow:

User-agent: NutchCrawler
Disallow:

User-agent: *
Disallow: /