I am sure you have already read a post like this before, but in the rare case that you haven't, please read this one. When you comment on a blog post, some of your profiles are set to where your email address is not linked to your comment, so there is no way to reply. While I can reply to your comment on the actual blog, I cannot email you, therefore I don't know that you actually received the reply. All that to say, I love comments, and I reply letting you know that I do. So, please, if you haven't already, look at this tutorial from Grace and get your settings changed so we can communicate better.* Thanks!
*some of you who used to have your email linked to your comments do not anymore, so it doesn't hurt to double check to see that your settings are correct