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!
my only concern is false positives or false positives to take someone down for no good reason. if you do something like that I'm pretty sure the community will be more than happy to take an extreme blow at your PR. don't do this!