Mark W. Schaefer is an educator, business consultant, and author, as well as the executive director of Schaefer Marketing Solutions. His blog, at www.businessesGROW.com, is one of the AdAge Top 100 blogs of the world. He has worked in global sales, public relations, and marketing for nearly 30 years. In 2012, Schaefer was named as one of the Top 50 social media power influencers by Forbes.com.