Here are some of the channels advertising agencies can use to promote their marketing services and packages:   ᐅ Client testimonials and reviews ᐅ Comprehensive case studies (with permission) ᐅ Industry accolades (where relevant) ᐅ Quotes in the press (magazines, blogs, radio, etc.) ᐅ Industry conferences and keynote speeches ᐅ Maintaining a high-quality website ᐅ Editorial contributions to industry publications ᐅ Conference sponsorship deals ᐅ Search engine visibility (ranking well) ᐅ Social media (networks, forums, podcasts, etc.) ᐅ Press releases