User-agent: Googlebot
Disallow: /ppc/

User-agent: msnbot
Disallow: /ppc/

User-agent: Slurp
Disallow: /ppc/

User-agent: Googlebot
Disallow: /directory-submission-service.php

User-agent: msnbot
Disallow: /directory-submission-service.php

User-agent: Slurp
Disallow: /directory-submission-service.php