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!
Last time you did this I was unsubbed from several of my favorite creators, should I be checking that this hasn't happened again, or have you fixed the algorithm? I'll be checking anyway