User-agent: dotbot
Disallow: / 

User-agent: GigaBot
disallow: /

User-agent: Voyager
disallow: /

User-agent: Baiduspider
disallow: /

User-agent: Yandex
disallow: /

User-Agent: Scooter
Disallow: /

User-Agent: twiceler
Disallow: /

User-Agent: psbot
Disallow: /

User-agent: *
disallow: /add/