User-agent: *
Disallow: /aggregator
Disallow: /tracker
Disallow: /comment/reply
Disallow: /node/add
Disallow: /user
Disallow: /search
Disallow: /book/print

User-agent: Slurp
Crawl-delay: 20

User-agent: Twiceler-0.9
Disallow: /

User-agent: psbot
Disallow: /