| http://www.w3.org/ns/prov#value | - Using a quantitative scale from 0 to 10, a Net Promoter Score is the difference between how many of your customers are promoters" (giving a 9 or 10) and those who are detractors" (with a score of 6 or below.) The difference is key, since word-of-mouth marketing is a powerful predictor of repeat purchases and promotion of your products and services.
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