Facebook uses random sampling to determine app ratings and avoid manipulation

With its new App Center, Facebook ranks applications by star ratings, but unlike Apple and Android’s app platforms, the social network relies on random sampling to gather these ratings.

Currently there is no way for users to rate an app on demand. Instead, users are randomly prompted to provide star ratings through modules around the site. This unique approach discourages user or developer manipulation. Facebook product manager Matt Wyndowe tells us the company is considering options for allowing users to rate apps directly from an App Center page, but Facebook wants to do so in a way that maintains the integrity of its ratings.

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