Looking at your example, I can see how this can get really annoying. It makes me wish I could disable notifications on comment threads I've started but not disable comments on an entire post. With LJ for example, you have to manually remove yourself from the post and delete all your comments yourself to stop it.

even a thumbs up button works. It seems the majority are hung up over the word 'like' but are okay with kudos, etc. Which is why I think the ability to customize your instant feedback word/button would be good.