The author intends to investigate the new opportunities offered by the web 2.0 about "real time" information that can be found by web research. The present paper aims at pointing out how same web tools, such as online platform for web survey, when used under specific guidelines could become a useful and flexible detecting/discovering instrument, reserving the quality of the information. To support the hypothesis, the author presents a study carried out by the Italian association for celiac disease Observatory which studies the trend of prices throughout the country of 12 gluten-free foods within two separate sale channels, pharmaceutical and retail. The presentation of the adopted methodology and the analysis of the data highlight the procedural aspects that characterized the study and give rise to concluding remarks on pros/cons of the possible alternative uses of the web survey.
Keywords: Piattaforma online, questionari online, celiachia, alimenti senza glutine, qualità del dato, internet study