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!
Please don't you did this last time and some if the people I've subscribed to went away which was a pain in the ass to make sure I had them all back on my subscription list