I just hate it. Why not try and earn suscribers the earned way? Most of the comments here are like this:

Hi everyone!
I am (insert name here). I just started a yt channel, uploading (insert some random game here). I recently got a hd recorder, so can you check my channel out?

Or maybe you see that one person who advertises some other person's channel, saying it's ok because it's not their channel. It's still the same thing.