word-of-mouth

adj.

口头的，口述的；

Word of mouth
Social information filtering: algorithms for automating “word of mouth”
The Effect of Word of Mouth on Sales: Online Book Reviews
Customer Satisfaction and Word of Mouth
The Digitization of Word of Mouth: Promise and Challenges of Online Feedback Mechanisms
Electronic word-of-mouth via consumer-opinion platforms: What motivates consumers to articulate themselves on the Internet?
The Digitization of Word of Mouth: Promise and Challenges of Online Feedback Mechanisms
The effect of word of mouth online: Online book reviews
Social Ties and Word-Of-Mouth Referral Behavior
Using Online Conversations to Study Word-of-Mouth Communication