D4 is one of Philadelphia's Top 10 advertising agencies. What do we do best? The first five seconds, which leads to thirty more, which leads to a visit to your website, which may win you a customer for life. What makes us different? Well, in the emotional, invisible, gut-level realm: we're idea warriors. But going to battle without a winning strategy will be a very long, costly and losing war- so strategy leads us. In the real world of productivity and costs: everything we do is in-house, which means faster speed to market and lower costs for you. That includes video suites, post production suites, audio suites, video shooting studio, design suites, website development, creative, account services, social media, SEO, and viral marketing.