User-agent: psbot
Disallow: /

User-agent: NetMechanic
Disallow: /

User-agent: CherryPicker
Disallow: /

User-agent: EmailCollector
Disallow: /

User-agent: EmailSiphon
Disallow: /

User-agent: WebBandit
Disallow: /

User-agent: EmailWolf
Disallow: /

User-agent: Crescent
Disallow: /

User-agent: SiteSnagger
Disallow: /

User-agent: ProWebWalker
Disallow: /

User-agent: libwww-perl/5.803
Disallow: /

User-agent: *