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

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

Kraut, Robert E., and Paul Resnick. Building successful online communities: Evidence-based social design. MIT Press, 2012.

Building successful online communities: Evidence-based social design (Kraut and Resnick)

Encouraging Contribution in Online Review Communities

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

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