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Disallow: /ajax/
Disallow: /offline/
Disallow: /about/download/
Disallow: /ru/
Disallow: /*_escaped_fragment_

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Clean-param: utm_referer /
Clean-param: utm_ya_campaign /
Clean-param: yabizcmpgn /
Clean-param: utm_candidate /
Clean-param: ybaip /
Clean-param: ref /search/
Clean-param: s /search/
Clean-param: client&trend /projects/*/

# bad robots:
User-agent: AhrefsBot
Disallow: /