- Readability
- Length of review
- Reputation in the community
- Identifiable reviewers
- Expertise in the community
- Tone of review (positive/negative)

New York University

These communities are composed of a category that community members take part in reviewing the items/products/places within this category. Examples include: Movielens, Amazon, Yelp

Online review communities

Liu, Z., & Park, S. (2015). What makes a useful online review? Implication for travel product websites. Tourism management, 47, 140-151.

What makes a useful online review? Implication for travel product websites

- set challenging and specific contribution goals for individual members
- imposing specific guidelines for these contribution goals

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