Extracting experimental stimulus reviews that contain complete information can provide a new research perspective for comparing the usefulness of reviews from different platforms. Using the tourism reviews from Sina Weibo and Ctrip, which represent community-based and transactional platform reviews, respectively, as source materials, a set of extracted reference standards was first developed, and an extended information adoption model was constructed to explore the influence of review type and review quality on usefulness. The results showed that the usefulness of transactional reviews was significantly higher than that of community-based reviews, that the perception of affective information and the cognitive aspect of the perception of price information played a partial mediating role in the process of review type influencing usefulness, and that the value of frugality moderated the main effect. This study enriches the connotation of the information adoption model and has great reference value for information search and related marketing efforts.