Since I'm using the cheapest (as in free) blogging interface available, I have to play the hand I'm dealt as far as features go. One feature Blogger lacks is the ability for the blogger to reply to comments. Furthermore, it doesn't allow the commenter to include an email address, even one visible only to me.
So if I want to reply to or comment on your comment, I will leave a comment on that same post. Whatever...you know what I mean. If you say something and you think I might want to say something back, check the comments again later. There. Now if you can't understand that, give me a call; I'm in the book.