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Some of the information customers want directly from you, the marketer of the product, includes Comparison Charts, Decision Guides, Product Specs, Tutorials, Manuals, User Guides (not the same as manuals), Training Courses, identification of the most informed infomediaries, and information on finding ratings and reviews. As we’ve seen, customers don’t want certain information directly from you, particularly in areas where you are likely to be biased, don’t know local conditions, don’t know about specialized uses—in short, areas where truth and relevance are subject to interpretation and bias. So, you’ll have to point them to independent sources—in other words, word-of-mouth sources.
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George Silverman (The Secrets of Word-of-Mouth Marketing: How to Trigger Exponential Sales Through Runaway Word of Mouth)