How do you take a relatively unknown credit card reward company's membership from less than 50,000 to more than 200,000 in less than 12 months? Simple - you blow it out. From bill stuffers to print ads to radio and TV, the messaging played off the simplicity of the program and built a wealth of curiosity in the audience's mind. Denver got a good dose of what Rainbow Rewards is all about, and members started lining up.