Dave Evans is an expert in social media marketing whose passion is tapping the power of the Social Web and applying it to business. Beginning in 1994, when he founded marketing consultancy Digital Voodoo, and continuing through his career in advertising, Dave has developed interactive communication programs for Microsoft, Hewlett-Packard, Southwest Airlines, AARP, the U.S. Air Force, AT&T, Wal-Mart, Dial, the PGA Tour, Chili's, Meredith Publishing, and many more. Dave is a ClickZ columnist and a frequent conference speaker, and has served on the advisory board for ad:tech as well as the Measurement and Metrics Council for the Word of Mouth Marketing Association.