I find it frustrating. I personally leave a comment on every hub that I read. I think it is common courtesy, even if it is just to say nice job. Not to mention, then you know someone has read it. Sure, you can see how many views it has but how accurate is that. Maybe someone just clicked on the hub and clicked back out. So, I tend not to follow someone that disables the comments. That, and I like to be at least spoken back to if I leave a comment. Those that interact, I am more likely to be a good follower too.