User-agent: *
Disallow: /*PHPSESSID=*
Disallow: /catalog.php?nid=*grid=*
Disallow: /*a*href*
Host: www.bkw.ru

User-agent: Yandex
Disallow: /catalog.php?nid=*grid=*
Disallow: /*a*href*
Clean-param: PHPSESSID
Host: www.bkw.ru