Listen to this interview to learn: How when you help brands stay on the leading edge, you often have to stay on the bleeding edge Changes that are occuring between the pure play ad agencies vs. the digital agencies Impact of reaching customers when they have many choices of screens, from desktop to iPad/tablet to mobile Fundamental tenets of customer engagement that still guide online marketing strategies What Walmart did differently to engage customers around a Mother's Day campaign led by Twist Image Mitch Joel talks with Bill Ringle about how brands use technology to form and develop direct relationships with customers.