I think you misunderstood Facebook's strategy here completely. The whole point of this feature is to add value to Facebook's main app, as this is a feature in t

I think you misunderstood Facebook's strategy here completely. The whole point of this feature is to add value to Facebook's main app, as this is a feature in the app and not a separate app itself, it makes the product more sticky and less likely people will delete their facebook account in future.