User-agent: Mediapartners-Google* 
Disallow: 

User-agent: MSIECrawler
Disallow: /

User-agent: BecomeBot
Disallow: /

User-Agent: MJ12bot
Disallow:   /

User-Agent: zermelo
Disallow:   /

User-agent: Yeti/1.0
Disallow: /

User-agent: Yeti/0.01
Disallow: /

User-agent: Yeti
Disallow: /

User-agent: NaverBot
Disallow: /