The Referral EngineBy: John Jantsch The small business guru behind Duct Tape Marketing shares his most valuable lesson: how to get your customers to do your best marketing for you. The power of glitzy advertising and elaborate marketing campaigns is on the wane; word of mouth referrals are what drive business today. People trust the recommendation of a friend, family member, colleague, or even stranger with similar tastes over anything thrust at them by a faceless