Interep National Radio Sales, Inc.
- Provides national spot radio advertising. (Nasdaq: IREP).
- http://www.interep.com/

Splash Entertainment
- A promotion agency that specializes in the creative development, negotiation, implementation and management of radio campaigns.
- http://www.teamsplash.com

Radio Publicity
- Advice for getting free publicity and advertising on radio talk shows.
- http://www.radiopublicity.com

Multi-Net Marketing, Inc
- A broadcast advertising agency supplying radio and television advertising nationwide.
- http://www.multinetmarketing.com/

MediaAmerica, Inc.
- America's largest independent network radio advertising sales organization. Also represents cable television, Internet and other new media to the national advertising community.
- http://www.mediaamerica.com/

Amish Chicago Advertising
- Freelance copywriters and radio producers specializing in funny attention getting radio spots.
- http://amishchicago.com/