User-agent: Yandex
Clean-param: PHPSESSID&SID&phpsessid&sid /

User-agent: Aport
User-agent: Googlebot
User-agent: StackRambler
User-Agent: *

User-agent: Yandex
Disallow: /webcounter/

User-agent: Aport
Disallow: /webcounter/

User-agent: StackRambler
Disallow: /webcounter/

User-agent: *
Disallow: /webcounter/