Zimmerman's clients include Office Depot, Papa Johns, Nissan, Lane Bryant, Firehouse Subs, White Castle, Facebook, and Boston Market.

Strategy

Zimmerman claims to be a "results-driven agency" and is working to diversify its pool of clients. The firm has worked to sign additional airlines, full-service restaurants, rental car companies, and consumer packaged goods makers (specifically beverage makers, a big revenue draw for ad agencies). The company is also working to improve existing metrics to help clients understand the value they get from its work. Both these strategies -- client diversification and return on investment tracking -- are relatively new trends and opportunities recognized by all agencies since the Great Recession.