It's an analytics feature like those offered by Google and a dozen other analytics SDKs: https://developers.facebook.com/docs/app-events/ https://developers.google.com/analytics/devguides/collection...
It's an analytics feature like those offered by Google and a dozen other analytics SDKs: https://developers.facebook.com/docs/app-events/ https://developers.google.com/analytics/devguides/collection...