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!
Does that mean @pewdiepie will lose more than half of his subscribers? Since most of them are double or tripple accounts anyway made just to beat another channel