Asking generally - is there a compelling technical reason we don't have an option to "subscribe" to a thread, or be emailed notifications of direct replies to our comments? Or even that there was a reply, if not the reply itself?

I am mildly irked that I have to go check my LW inbox for this; I think it reinforces my light tendencies towards online OCD and ADD to work to a pull model rather than a push.

(Or if there is one, please enlighten me, as I had thought I had searched sufficiently to find one if it existed.)