For questions about customer satisfaction (a measure of how products and services supplied by a company meet or surpass customer expectation).
Wiki definition:
Customer satisfaction is a measure of how products and services supplied by a company meet or surpass customer expectation.
Definition according to "Marketing Metrics: The Definitive Guide to Measuring Marketing Performance" book:
The number of customers, or percentage of total customers, whose reported experience with a firm, its products, or its services (ratings) exceeds specified satisfaction goals.