The sub4sub community can be just terrible! I also hate it when they lie about subbing, I can tell from my numbers! Or when they copy paste a generic comment that's not even related to your video asking for you to sub them... if someone wants me to check out their channel and they leave a lovely genuine comment that shows they've actually watched my video and made some sort of connection with me then i'm always more than happy to check them out! I've made some great friends on youtube through that.