Not about your app but every and I mean EVERY app implements these social features, and I don't know anyone in my circles actually USING whatever social features - even if we talk about our experiences with common apps. Are you sure you're not just investing programming effort into nothing?
We've seen some of the people on the app using the social features, but yea I think on some apps it doesn't get used. I think if no one ends up using these features we'll just remove them.