User-agent: Yandex
Disallow: /*_openstat
Disallow: /*from=adwords
Disallow: /?action=search
Disallow: /style.css
Disallow: /kcaptcha/
Host: 
Allow: /?show_news

User-agent: Googlebot
Disallow: /*_openstat
Disallow: /*from=adwords
Disallow: /?action=search
Disallow: /style.css
Disallow: /kcaptcha/
Allow: /?show_news

User-agent: *
Disallow: /?
Disallow: /?action=search
Disallow: /style.css
Disallow: /kcaptcha/
Disallow: /MyCMS
Allow: /?show_news