In the world of e-commerce, shopping cart abandonment is a vital performance metric for online businesses. The rest of us rarely give shopping carts - real or virtual - much thought. Not so the "Cart Whisperer," who claims he can talk to carts better than he can to people. A viral video of the Cart Whisperer was dreamed up at McCann Erickson to drive traffic to nomore abandonedcarts.com, where merchants can learn how VeriSign transaction and site security can help. The launch strategy included seeding the video on existing video sites and applications on SNS. The video has been viewed more than 1.2 million times on YouTube alone, and the Whisperer is still connecting with human pals on Facebook and MySpace.