User-agent: W3C-checklink
Disallow: 

User-agent: *
Disallow: /site_map
Disallow: *?op=auth
Disallow: *?op=createAccount
Disallow: *?op=displayAccount
Disallow: *?op=displayLogin
Disallow: *?op=makePrintable
Disallow: *?op=recoverPassword
Disallow: *?makePrintable=1