"Plus, hear from brands such as Sony Electronics, Ebay, Walmart, Cisco, Zappos.com, Sharpie, Petco, Dell, Whole Foods, SAP, Citrix, Dun & Bradstreet, Caterpillar, Taylormade and San Diego Zoo.This is just a sampling of what is in store for you at Social Media Marketing World in San Diego on April 7, 8 and 9, 2013.What makes this event different?" . . . . .