Heads up, Creators: On Dec 13-14 you may see a noticeable decrease in your sub count as we remove spam subscriptions. If spam is removed, you'll see a YouTube Studio alert: https://goo.gl/qGDBvX This should help give you confidence that the subs you do have are real fans!
Even if they are spam accounts they still can help when it come to getting the ball rolling...and if their not causing any harm nor damage why get rid of them? What if your algorithm for this fails and you unsubscribe some actual real fans? How is that fair or profitable?