User-agent: linksmanager_bot
User-agent: linksmanager
User-agent: LinkWalker
User-agent: psbot
User-agent: LinkChecker
User-agent: MSIECrawler
User-agent: Vagabondo
User-agent: Yandex
User-agent: Baiduspider
User-agent: VoilaBot 
Disallow: /