Crowdsourcing platforms - such as Vivino - that aggregate the opinions of large numbers of amateur wine reviewers represent a new source of information on the wine market. We assess the validity of aggregated Vivino ratings based on two criteria: correlation with professional critics' ratings...

Wine consumers have mainly relied upon prices and professional critics’ reviews to infer wine quality. Crowdsourcing platforms, such as Vivino, have introduced a new source of information, leveraging the opinions from large numbers of amateur wine reviewers and averaging their ratings. We...