Symph
I'm a dude with a face and I know how to use it.
Problem with that logic is your feed won't represent your interests and it makes it so you miss videos you actually do want to see. I understand the common courtesy mentality, but that's what Nice Peter does, subs everyne who subs him even with his thousands and thousands of subscribers, so sure, he subbed them all, do you think he actually watches any of them? I think it's a nice thought but counter productive.I have done sub4sub before. Not a lot but enough to know that a couple of those people still watch my videos because they still show up on their homepage when you release a new video. I have even gotten comments from sub4subbers. And I swear I only did it with like 10-15 people at the most. Also no matter who it is that subs to my channel I ALWAYS sub back. I don't care if they have 0 subscribers and 0r video views its common courtesy in my mind.