# slow down MSNbot
   User-agent: msnbot
   Crawl-delay: 30
# slow down Spinn3r
   User-agent: Spinn3r
   Crawl-delay: 20
# slow doens Radian6
  User-agent: R6_FeedFetcher
  Crawl-delay: 20
# slow down nuance
  User-agent: lmspider
  Disallow: /