It's hard to buy anything these days without being asked to rate or review it. Evan Davis and guests look at how have businesses such as Tripadvisor, Feefo and Checkatrade have altered the relationship between companies and consumers? Do you trust the wisdom of crowds more than an expert's view? Guests Matt West, Chief Executive of Feefo Rob Paterson, Chief Executive of Best Western Hotels GB Caroline Wiertz, Professor of Marketing and Associate Dean for Entrepreneurship at the Cass Business School in LOndon