I have learned pretty early on not to really care/concern myself much with other people's decisions which have no impact on myself, so with that being said it doesn't really move me either way. With that being said in my honest opinion it does seem a little desperate or as if there may be a self-confidence issue that they feel so desperate to just meet this imaginary quota in their head rather then just letting people sub, follow, etc naturally. Personally I wouldn't be able to feel content knowing that i'm buying followers/subscribers but that's just me.
There was this girl I know who went around popular videos asking in the comments for 'YouTube Friends' which basically means sub for sub and her sub count went up by over a 100 and I was so close to calling her out for it.
Sub4sub is awful and I don't think it does anyone any good...


When you say " Youtube Friends " is does not necessary mean it is sub4sub it means they want to make to Youtube friends with other Youtubers and chat to eachother and meet up at big Youtube events like Summer In The City and may be collab in the future and that's i want to do (trying to) make Youtube friends with small Youtubers, chatting to them and meet up in the future.
But it seems you assume the girl you was talking out was just asking for Sub4sub but how can you be so sure she was asking for sub4sub instead she might of wanted to make Youtube friends.
You can always tell one of these when they have a couple thousand, maybe more, subscribers and only a few hundred views per video!
I don't really mind it that much, Subscribers are just a number, its the 'views' and comments that really count because its a community!