When you comment on a post (here or elsewhere), do you come back later to see if anyone has replied to you?
Do you subscribe to the comment feed? Here, you can sub to the comment thread of each individual post, or to all the comments in general.
Some blogs—I see it most often on Blogger—offer email notification of comments. I seldom subscribe to those, though: it can mean too much mail. I’m more likely to subscribe to the post’s comment feed, if that option exists.