and the guest, and with both parties looking to bolster their reputations for future use within the system, the incentive to review is mutual and engagement is high: more than 70 percent of Airbnb stays are reviewed, and while there is some “grade inflation,” it helps keep both parties in check. The system has additional value for Airbnb: it is used as a lever to encourage and to reward good host behavior and to discourage bad behavior.

