User-agent: *
Disallow: /?title=Send-to-a-Friend
Disallow: /?title=HTTP_Error_404

Disallow: /User_Login,1,2/
Disallow: /1/2/User_Login.html
Disallow: /?title=User Login
Disallow: /?title=User%20Login
Disallow: /?title=User-Login
Disallow: /?title=User_Login