I think it's a premium thing tho, right?

There's not notification when someone replies to one of your posts. Not for premium members or anyone, although it is on my to-do list.

-- Ryan

There's not notification when someone replies to one of your posts

There's not a separate notification, but there IS "a button for that". It's on the favorite boards widget for "replies to my posts", and that seems to me to be easier (they are all in one place), than looking through a bunch of separate notices anyway. My inbox gets cluttered with various notices (yes, I know I can turn them off), but since there is already a button for "replies. . . ", that's a notification that wouldn't be necessary, IMHO.