User-agent: Yandex
Disallow: /*_openstat
Disallow: /*from=adwords
Disallow: /*UserSearch
Disallow: /*login
Disallow: /*register
Host: www.f5.ru

User-agent: Googlebot
Disallow: /*_openstat
Disallow: /*from=adwords
Disallow: /*UserSearch
Disallow: /*login
Disallow: /*register

User-agent: *
Disallow: